Perhaps you should try some spelling variations:
malawi human » law human, malawi can, malawi rural
yala human » data human
dong nana » dong nan, dong yang
gene yang » gene bank
shang hai » shang kai, dang hai, chang ha
zhong tai » hong tan, hong hai, zhong zhi
yang tan » yang fan, yang dean, yang yang

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) OR (malawi human)) gene yang tan ((shang hai) or (zhong tai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong nana ((yala human) OR (malawi human)) gene yang tan ((shang hai) OR (zhong tai)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong nana ((yala human) OR (malawi human)) gene yang tan ((shang hai) or (zhong tai)) ;".
• Adding a wildcard symbol may retrieve word variants: dong nana ((yala human) OR (malawi human)) gene yang tan ((shang hai) or (zhong tai)) ;*.