Only use Product Name, take out all unnecessary descriptive words.
For example, if you want to find "small pump", you use the keyword "pump" to do search, not only use "small pump".

Do your search using different keywords, the search effect will be increased greately.
For example, if you want to search computer harddrive, at the first time,you can search "harddrive"; at the second time, you can search "computer"; at the third time, you can also search "harddisk" .

You can do search with the relative product names.
For example, if you want to search "Computer desk", then "Computer desk","desk" and "table" are possible keywords you can use.

Search catalog.
For example, if you want to look for a "lathe", besides the keyword "lathe", you can also use "machine tool" as a keyword to expand the search range.