Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
nhieu tang » chieu sang, hieu lang
nhiet nang » nhiet dong, viet nang, thien nang
chinh luan » chinh ngan, trinh luan, binh luan
luan nhung » luan chung, luan hung, quan nhung
hieu quan » hieu qua, lieu quan, thien quan
chong dan » cong dan, thong dan, chong gian
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) OR (nhiet nang)))) - hanh chinh luan nhung chong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quan) OR (((nhieu tang) OR (nhiet nang)))) - hanh chinh luan nhung chong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quan) or (((nhieu tang) OR (nhiet nang)))) - hanh chinh luan nhung chong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quan) or (((nhieu tang) OR (nhiet nang)))) - hanh chinh luan nhung chong dan than cau*.