Perhaps you should try some spelling variations:
thanh trung » thanh tung
manh trung » manh tung, manh hung, sinh trung
nhieu tang » chieu sang, nhiet nang
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, hieu van
dan thanh » dang thanh, danh thanh, ban thanh
thanh cac » hanh cac, thanh bac, thanh ca
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) OR (nhieu tang)) - ((manh trung) or (thanh trung)) va nhung cong dan thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (nhieu tang)) - ((manh trung) OR (thanh trung)) va nhung cong dan thanh cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) OR (nhieu tang)) - ((manh trung) or (thanh trung)) va nhung cong dan thanh cac".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) OR (nhieu tang)) - ((manh trung) or (thanh trung)) va nhung cong dan thanh cac*.