Use * at the beginning, or end, or within a keyword to match any characters (or no characters).
Examples
compress*
Matches occurrences of “compress”, "compressor", "compressors", "compressed", "compresses", and any other word beginning with "compress".
*chargers
Matches occurrences of “chargers”, "dischargers", "turbochargers" and any other word ending with "chargers"
el*ing
Matches occurrences of "electroplating", "elevating" and any other word beginning with "el" and ending with "ing"
Use ? at the beginning, or end, or within a keyword to match any single character.
ladder?
2?,000
Example
"chimney caps"
Matches occurrences of “chimney caps”, but not index entries for "chimney" in the "caps" group, or "caps, chimney".
Finds items where word1 occurs within the indicated number of words of word2.
liners w/5 tires
Matches occurrences of “liners” within five words or less from “tires”
Shipper w/50 consignor
Matches occurrences of “shipper” within fifty words or less from “consignor”
"cast aluminum" w/100 "heating elements"
Matches occurrences of the phrase "cast aluminum" within 100 words or less from the phrase "heating elements"
Finds items that contain both word1 and word2.
steel and bridge
Finds items that contain either word1 or word2.
steel or bridge
Use parentheses () to group search phrases that use and with or.
(aluminum or plastic) and boat