Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc tieu » hoc thieu, hoc dieu, hoc tieng
hoc sieu » hoc dieu, hoc thieu, hoc hien
cua dang » cua ban
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cao » toan cao, thai cao, than cap

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

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