Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
congo can » congo call, cong van, congo a
gene wan » gene bank, ee wan, gene w
wan ming » kian ming, chan ming, yuan ming
yan yi » yang yi, tan yi, yin yi
yan zi » yan zhi, yuan zi, ban zi
wang » wing, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan yi) OR (yan zi)) human gene wan ming ((cong shu) or (congo can)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan yi) OR (yan zi)) human gene wan ming ((cong shu) OR (congo can)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yi) OR (yan zi)) human gene wan ming ((cong shu) or (congo can)) ;".
• Adding a wildcard symbol may retrieve word variants: wang ((yan yi) OR (yan zi)) human gene wan ming ((cong shu) or (congo can)) ;*.