Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
yang yao » yang yang, wang yan, yang yi
hua gene » human gene, a gene, hua ren
yang lin » yang jin, wang lin, yang li
hong ng » hong kong, hong jong, hong hong
yan ka » yang ka, yuan kai
hong 7 » hong w, hong a, hong g

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 ka) or (yang yao)) hua gene ((yang lin) or (yuan wang)) ((hong ng) or (hong 7)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan ka) OR (yang yao)) hua gene ((yang lin) OR (yuan wang)) ((hong ng) OR (hong 7)) ;.
• Adding a wildcard symbol may retrieve word variants: wang ((yan ka) or (yang yao)) hua gene ((yang lin) or (yuan wang)) ((hong ng) or (hong 7)) ;*.