Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
hua gene » human gene, a gene, hy5 gene
yang min » yang mind, yang jin, yang lin
tang min » chang min, sang minh, yang mind
hong ghi » zhong zhi, hong g, hong hai
hua ren » hua chen

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