Perhaps you should try some spelling variations:
yala human » data human, malawi human
human gene » human genome, human gender, human bone
dong nana » dong nan, dong yang
nana yala » nana yaa
gene yang » gene bank
zhong tai » hong tan, zhong zhi
yang tan » yang fan, yang dean, yang yang
hong hai » shang hai, dang hai, hong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong nana yala human gene yang tan ((hong hai) OR (zhong tai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong nana yala human gene yang tan ((hong hai) OR (zhong tai)) ;".
• Adding a wildcard symbol may retrieve word variants: dong nana yala human gene yang tan ((hong hai) OR (zhong tai)) ;*.