Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, chien tranh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hien hanh » dieu hanh
cua thong » cua thuong, cua khong, cua tong
tung cua » trung cua, tuong cua, dung cua
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 ((thien thanh) or (hien hanh)) - thanh tung cua thong cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (hien hanh)) - thanh tung cua thong cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (hien hanh)) - thanh tung cua thong cong tan than cau*.