Perhaps you should try some spelling variations:
doing hoang » dong hoang
hoang sy » hoang vu
hua gene » human gene, a gene, hua ren
yang lin » wang lin, yang li, yang liang
yang jun » yang jui, pang jun, yang judy
yang jin » yang jie, ying jin, shang jin
hong ghi » zhong zhi, hong g
hong hai » shang hai, zhong tai, dang hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doing hoang sy hua gene ((yang lin) or (((yang jun) or (yang jin)))) ((hong ghi) or (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doing hoang sy hua gene ((yang lin) OR (((yang jun) OR (yang jin)))) ((hong ghi) OR (hong hai)) ;.
• Adding a wildcard symbol may retrieve word variants: doing hoang sy hua gene ((yang lin) or (((yang jun) or (yang jin)))) ((hong ghi) or (hong hai)) ;*.