Perhaps you should try some spelling variations:
dong hoang » hong hong
wang yang » wang yan, wang liang, wang yanling
dong sink » dong sin, dong bin, dong ping
tin zhong » tin hong, bin zhang, ji zhong
zhong zhi » zhang zhi, hong ghi, zhong tai
hua gene » human gene, a gene, hua ren
gene yan » gene bank, ren yan, see yan
dong di » dong sin
yan tin » yuan ting, yang jin, yang lin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((((dong hoang) or (wang yang))) or (dong di))) or (dong sink)) ya hua gene yan tin zhong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((dong hoang) OR (wang yang))) OR (dong di))) OR (dong sink)) ya hua gene yan tin zhong zhi ;.
• Adding a wildcard symbol may retrieve word variants: ((((((dong hoang) or (wang yang))) or (dong di))) or (dong sink)) ya hua gene yan tin zhong zhi ;*.