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Search FAQs
See Also:
Search Tips, Search Basics, Search Problem-Solver, Search Command Reference
- Do capital letters matter?
- What´s the simplest way to search for a phrase?
- How do I find an exact word or phrase?
- How do I find my listing, now that it´s live?
- How do I find a group of listings that may contain a variety of words or phrases?
- How can I control the order in which my search terms are evaluated?
- How can I control the precision of the search?
- Can I use wildcard characters, as I do when I´m searching for text in a word processor document?
- I get nothing! I´ve typed in a very explicit search term, or a chemical or math formula that I am sure is correct. So what´s wrong?
- Just point me to the search commands. I can figure out how to use them.
Do capital letters matter?
They do not matter at all. Your search is not case-sensitive. Click here for more information.
What´s the simplest way to search for a phrase?
Enclose the phrase with double quotation-marks. Click here for more information.
How do I find an exact word or phrase?
Enclose the phrase with double quotation-marks:
"aniline dyes in textile manufacturing"
This prevents the search engine from stemming. Stemming is a technique that can find listings containing words that derive from the same root word as a search term. (See "Stemming".)
The search engine will find only what you have quoted. To find variations on words ("coils" when you enter "coil" for instance) see "Wildcards".
How do I find my listing, now that it´s live?
If you know your listing is live, you can...
id:12345
where 12345 represents the ID number of your listing. Every listing has a unique ID number.
"Novel Thickening Agent for Non-Aqueous Systems"
"Novel Thickening Agent"
Upper- and lowercase letters don´t matter.
How do I find a group of listings that may contain a variety of words or phrases?
Separate words and phrases with commas. Commas act as the OR operator. Click here for more information. yet2.com automatically stems words and phrases that are not in double quotation-marks. (And see "Stemming".) For example:
aniline, textile, "dye technology"
finds listings that contain any of the terms "aniline" (or its stemmed variations), "textile" (or its stemmed variations), or "dye technology" (and only dye technology, because it is double-quoted).
How can I control the order in which my search terms are evaluated?
Normally, yet2.com evaluates terms joined by AND before it evaluates terms joined by OR. So:
aniline OR textile AND "dye technology"
aniline, textile +"dye technology"first finds listings that contain "textile" and that also contain "dye technology." Then, it finds additional listings in the database that contain "aniline." This behavior is different from
aniline AND textile OR "dye technology"
aniline +textile, "dye technology"where the query first finds listings that contain "aniline" and that also contain "textile," or finds listings that contain "dye technology."
You can control the order of precedence by using parentheses ( ).
aniline AND (textile OR "dye technology")
aniline +(textile, "dye technology")This query finds listings that contain "aniline" and which also contain either one or both of "textile" or "dye technology." See "Precedence".
How can I control the precision of the search?
Several ways: Use AND, OR, and NOT, with parentheses to control the documents your search returns. (Click here for more information.) There are also many other search commands you can use to achieve specific effects if you use the Complex Search Syntax.
Important: To use complex search syntax, precede your search terms with VQL: and double-quote the search query.
You can also weight your search terms to tell yet2.com how much importance to apply to each one:
VQL:"[50] aniline, [10] textile, [80] \"dye technology\""
Use a number between 1 and 100 within square brackets. The numbers do not need to add up to 100. See "Weighting Your Search Terms". Important: If your VQL query includes double-quotation marks, you must precede each mark with a backslash.
Can I use wildcard characters, as I do when I´m searching for text in a word processor document?
Yes, you can use * (the asterisk, for mulitple characters) and ? (the question mark, for any single character). See "Wildcards" and Table 2.
I get nothing! I´ve typed in a very explicit search term, or a chemical or math formula that I am sure is correct. So what´s wrong?
Generalized search engines -- such as the one yet2.com uses -- often require specialized characters to control the search: parentheses, dashes, square brackets, and so forth. Sometimes a formula or highly technical term will include such a character and give an unintended false instruction to the search engine. See "Search Problem-Solver" for more information about handling search terms that are not simply plain words.
Just point me to the search commands. I can figure out how to use them.
Here you go: "Search Command Reference"
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