Perhaps you should try some spelling variations:
thanh tung » thanh cong
dieu tinh » lieu tinh, dien tinh, kieu tinh
tong cong » trong cong, cong cong, dung cong
tung cua » trung cua, tuong cua, dung cua
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, 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 ((dieu tinh) or (diep tinh)) - thanh tung cua tong cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dieu tinh) OR (diep tinh)) - thanh tung cua tong cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu tinh) or (diep tinh)) - thanh tung cua tong cong dan than cau*.