Perhaps you should try some spelling variations:
thanh huong » thanh hung, anh huong, thanh tung
hieu quang » thieu quang, hieu quan, hieu qua
hieu lang » chieu sang, nhieu tang, hieu van
cong cong » cong dong, trong cong, dung cong
ban nhung » san nhung, ban phuong, gian nhung
nhung cau » chung cu, nhung bai, nhu cau
cong ban » cong bang, cong san, cong tan

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

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