Perhaps you should try some spelling variations:
dong yuan » don juan, dong hua, dong nan
meng yuan » meng hsuan, feng juan
fang yuan » wang yuhan, wang yan, tang yun
gene yang » gene bank
hua gene » human gene, a gene, hua ren
yang tin » yang jin, yang lin, yang jing
tin hong » tan hong, kia hong, thi hong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong yuan) or (((meng yuan) OR (fang yuan)))) wang hua gene yang tin hong seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yuan) OR (((meng yuan) OR (fang yuan)))) wang hua gene yang tin hong seo ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yuan) or (((meng yuan) OR (fang yuan)))) wang hua gene yang tin hong seo ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yuan) or (((meng yuan) OR (fang yuan)))) wang hua gene yang tin hong seo ;*.