Perhaps you should try some spelling variations:
zhang yan » zhang fan, zhang jian, wang yan
dong yang » dong hoang, wang yang, yang yang
gene tang » gene bank
dong bin » dong sin, dann bin
hua gene » human gene, a gene, hua ren
dong di » dong sin
li cong » li rong, li song, jiu cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((zhang yan) or (((dong yang) or (((dong bin) OR (dong di)))))) ya hua gene tang li cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((zhang yan) OR (((dong yang) OR (((dong bin) OR (dong di)))))) ya hua gene tang li cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((zhang yan) or (((dong yang) or (((dong bin) OR (dong di)))))) ya hua gene tang li cong shu ;*".