Perhaps you should try some spelling variations:
thanh tung » thanh cong
tuan nhung » quan nhung, tuan hung, thuat nhung
nhung cong » dung cong, thong cong, hang cong
hoc dien » hoc hien, hoc vien, hoc dieu
dien anh » tieng anh, dien dan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dien anh - ((thanh trung) or (thanh tung)) tuan nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dien anh - ((thanh trung) OR (thanh tung)) tuan nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc dien anh - ((thanh trung) or (thanh tung)) tuan nhung cong tac toan cau*.