Perhaps you should try some spelling variations:
thanh tung » thanh cong
dang cong » dung cong
hoc sieu » hoc dieu, hoc thieu, hoc hien
hoc tieu » hoc thieu, hoc dieu, hoc tieng
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
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 sieu) or (hoc tieu)) tinh - thanh tung cua dang cong ban toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sieu) OR (hoc tieu)) tinh - thanh tung cua dang cong ban toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc sieu) or (hoc tieu)) tinh - thanh tung cua dang cong ban toan cao*.