Perhaps you should try some spelling variations:
yang malawi » ghana malawi
wang yang » wang yan, wang liang, wang yanling
can gene » can get, can gear
can give » can drive, can guide
yang jin » yang jie, yang jun, ying jin
law main » law pain, law making, new main
wong yue » wang yue, hong yu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang malawi ((can gene) OR (can give)) ((yang jin) OR (law main)) wong yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang malawi ((can gene) OR (can give)) ((yang jin) or (law main)) wong yue ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang malawi ((can gene) OR (can give)) ((yang jin) or (law main)) wong yue ;*.