Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
dong yang » dong hoang, yang yang, dan yang
wang yang » wang yan, wang liang, wang yanling
ya human » a human, das human, 2 human
gene yan » gene bank, ren yan, see yan
du cong » du congo, jiu cong
yan du » yang du

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 (wang yang))) or (dong (sin or sign))) ya human gene yan du cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((dong yang) OR (wang yang))) OR (dong (sin OR sign))) ya human gene yan du cong shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong yang) OR (wang yang))) or (dong (sin or sign))) ya human gene yan du cong shu ;".
• Adding a wildcard symbol may retrieve word variants: ((((dong yang) OR (wang yang))) or (dong (sin or sign))) ya human gene yan du cong shu ;*.