Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
sang minh » kang minah, anh minh, song min
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
hong hai » shang hai, zhong tai, dang hai
hong g » hong ng, hong w, hong 7

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)) xie hua gene ((sang minh) or (yang jin)) ((hong g) or (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (yang yang)) xie hua gene ((sang minh) OR (yang jin)) ((hong g) OR (hong hai)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) OR (yang yang)) xie hua gene ((sang minh) or (yang jin)) ((hong g) or (hong hai)) ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yang) OR (yang yang)) xie hua gene ((sang minh) or (yang jin)) ((hong g) or (hong hai)) ;*.