Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung dung
manh trung » manh tung, thanh trung, manh hung
nhiet nang » nhiet dong, viet nang, nhieu tang
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung vo » trung va, trung bo, trung vu
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

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