Terapeak's Product Research section searches match against eBay title keywords. Some numerical identifiers like Universal Product Codes (UPC) are supported as well. Terapeak keyword searches are true matches, meaning all of the search terms must have an exact spelling match in each eBay title result. The order of the search terms is unimportant.
The following Boolean or advanced search commands are supported:
exclusion: keyword -keyword
exact match: "keyword keyword keyword"
either/or: (keyword, Keyword)