Perhaps you should try some spelling variations:
wang danning » wang yanling, wang daoping, wang yangming
minh congo » minh cong, bind congo
congo shu » cong shu
poland a » poland _
jin sang » jin kang, jin chang, jing fang
jin song » jie song, john song, kim song
land a » land _

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 danning ((land a) OR (poland a)) ((jin sang) OR (jin song)) minh congo shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang danning ((land a) or (poland a)) ((jin sang) OR (jin song)) minh congo shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang danning ((land a) or (poland a)) ((jin sang) OR (jin song)) minh congo shu ;*.