Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
gene bank » gene banks, one bank, genomen bank
care hong » care long, care among, care home
wang hong » wang yong, wang hyoung, wang lihong
hua gene » human gene, a gene, hua ren
can hong » tan hong, a hong, ma hong
yi hua » li hua, ya hua, yi hui

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)) yi hua gene bank ((((can hong) OR (care hong))) or (wang hong)) ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (yang yang)) yi hua gene bank ((((can hong) OR (care hong))) OR (wang hong)) ghi ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (yang yang)) yi hua gene bank ((((can hong) OR (care hong))) or (wang hong)) ghi ;*".