Perhaps you should try some spelling variations:
gene yang » gene bank
lang yan » wang yan, wang yang, zhang yan
yang hua » wang hua, yang jui, wang hui
ying hua » ming hua, wang hua, ying zhu
yang hui » yang jui, wang hui, yang muxi
ji zhong » 2 zhong, wu zhong
yu zhong » wu zhong, yu zheng, hua zhong

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan ((((yang hua) or (ying hua))) or (yang hui)) gene yang ((ji zhong) OR (yu zhong)) zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan ((((yang hua) OR (ying hua))) OR (yang hui)) gene yang ((ji zhong) OR (yu zhong)) zhi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan ((((yang hua) or (ying hua))) or (yang hui)) gene yang ((ji zhong) OR (yu zhong)) zhi ;".
• Adding a wildcard symbol may retrieve word variants: lang yan ((((yang hua) or (ying hua))) or (yang hui)) gene yang ((ji zhong) OR (yu zhong)) zhi ;*.