Perhaps you should try some spelling variations:
thanh tung » thanh cong
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
hoc dieu » hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban 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 hanh - thanh tung ((cua thong) or (cua khong)) cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu hanh - thanh tung ((cua thong) OR (cua khong)) cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - thanh tung ((cua thong) or (cua khong)) cong tan than cau*.