Perhaps you should try some spelling variations:
malawi human » law human, malawi can, malawi rural
yang malawi » ghana malawi
human gene » human genome, human gender, human bone
yang yang » wang yang, wang yan
yang jin » yang jie, yang jun, ying jin
law main » law pain, law making, new main
wong yue » hong yu
wang yue » wang hua, wang yan, wang he

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang yang malawi human gene ((yang jin) or (law main)) ((wong yue) OR (wang yue)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang malawi human gene ((yang jin) OR (law main)) ((wong yue) OR (wang yue)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang yang malawi human gene ((yang jin) or (law main)) ((wong yue) OR (wang yue)) ;*".