Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
flow gene » flow scene, flow generic
zhong zhi » zhang zhi, hong ghi, zhong tai
how gene » how gender, how genres, how geo
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) OR (flow gene)) yan jiu ((wong sau) or (zhong zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (yang yang)) asia ((how gene) OR (flow gene)) yan jiu ((wong sau) OR (zhong zhi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (yang yang)) asia ((how gene) OR (flow gene)) yan jiu ((wong sau) or (zhong zhi)) ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yang) or (yang yang)) asia ((how gene) OR (flow gene)) yan jiu ((wong sau) or (zhong zhi)) ;*.