Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
bank amin » banks amid, bank aid, bank api
zhong zhi » zhang zhi, zhong tai
hua gene » human gene, a gene, hy5 gene
hong ghi » 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)) bank amin ((hong ghi) or (zhong zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (yang yang)) xi ((hua gene) OR (hua ren)) bank amin ((hong ghi) OR (zhong zhi)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (yang yang)) xi ((hua gene) OR (hua ren)) bank amin ((hong ghi) or (zhong zhi)) ;*".