Perhaps you should try some spelling variations:
thanh tung » thanh cong
tong thong » thong thong, dong thong, cong thong
hieu quan » hieu qua, lieu quan, thien quan
thong van » trong van, thong va, thong quan
cap tong » cap nong, cap hoang, gap trong
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((trieu tinh) or (hieu quan)) - ((thanh trung) or (thanh tung)) cap tong thong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((trieu tinh) OR (hieu quan)) - ((thanh trung) OR (thanh tung)) cap tong thong van toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((trieu tinh) or (hieu quan)) - ((thanh trung) or (thanh tung)) cap tong thong van toan cau*.