Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
zhong zhi » hong ghi, zhong tai
zhang zhi » wang zhi, zhang wei, zhang dai
how gene » how gender, how genres, flow gene
gene yan » gene bank, ren yan, see yan
wong sau » wong sam, wong siu, wong shiu
yan jiu » yang jie, yang jin, pang jiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong yang) or (yang yang)) asia how gene yan jiu ((wong sau) or (((zhong zhi) OR (zhang zhi)))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (yang yang)) asia how gene yan jiu ((wong sau) OR (((zhong zhi) OR (zhang zhi)))) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (yang yang)) asia how gene yan jiu ((wong sau) or (((zhong zhi) OR (zhang zhi)))) ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yang) or (yang yang)) asia how gene yan jiu ((wong sau) or (((zhong zhi) OR (zhang zhi)))) ;*.