Perhaps you should try some spelling variations:
thanh huong » thanh hung, thanh cong, anh huong
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
dai thong » dai tuong, dai hong, dai thang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
ho hieu » ho chieu, hoi hieu, nho hieu

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 lang - ((thanh huong) or (thanh tung)) dai thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((thanh huong) OR (thanh tung)) dai thong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((thanh huong) or (thanh tung)) dai thong cong tac toan cau*.