Perhaps you should try some spelling variations:
dong hoang » hong hong
yang yang » wang yang, wang yan
hai chuan » say chuan, tai chun
gene wang » gene bank, wen wang
ka chuan » say chuan, ka chai
zong ghi » hong ghi
wang li » wang lei, wang lin, tang li
zong he » zheng he

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 (yang yang)) ((ka chuan) or (hai chuan)) gene wang li ((zong ghi) OR (zong he)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong hoang) OR (yang yang)) ((ka chuan) OR (hai chuan)) gene wang li ((zong ghi) OR (zong he)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong hoang) or (yang yang)) ((ka chuan) or (hai chuan)) gene wang li ((zong ghi) OR (zong he)) ;*".