Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
luan chung » luan chinh
hieu quan » hieu qua, lieu quan, thien quan
luan hung » lan hung, luan ung, tuan hung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu quan) or (nhieu tang)) - hanh chinh ((luan hung) OR (luan chung)) cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quan) OR (nhieu tang)) - hanh chinh ((luan hung) OR (luan chung)) cong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quan) or (nhieu tang)) - hanh chinh ((luan hung) OR (luan chung)) cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quan) or (nhieu tang)) - hanh chinh ((luan hung) OR (luan chung)) cong dan than cau*.