Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
manh hung » anh huong
dung cong » dung trong
cong dang » cong dong, cong dan, cong dung
dang hanh » dang thanh, ban hanh, dang van
cua dung » cua dang, cua dong, qua dung
hanh cay » nhanh cay, hanh cac, hanh cat

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)) - ((sinh trung) or (manh hung)) cua dung cong dang hanh cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (nhieu tang)) - ((sinh trung) OR (manh hung)) cua dung cong dang hanh cay.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) OR (nhieu tang)) - ((sinh trung) or (manh hung)) cua dung cong dang hanh cay".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) OR (nhieu tang)) - ((sinh trung) or (manh hung)) cua dung cong dang hanh cay*.