Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, lieu tinh
thien tinh » khien tinh, thien minh, tien tinh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
thi nhung » thi nang, thi hong, thi huong
tung thi » tang thi, dung thi, tong thi
cong tac » cong ty
than cau » phan cau, than cap, thanh chau
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 ((thieu tinh) OR (thien tinh)) - thanh tung thi nhung cong tac ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (thien tinh)) - thanh tung thi nhung cong tac ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tinh) OR (thien tinh)) - thanh tung thi nhung cong tac ((than cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) OR (thien tinh)) - thanh tung thi nhung cong tac ((than cau) or (toan cau))*.