Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hanh doanh » hang doanh, chinh doanh, doanh doanh
thong cong » trong cong, tong cong, thong thong
thien anh » thien danh, tien anh, thien chanh
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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 anh) or (thien thanh)) - hanh doanh cua thong cong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (thien thanh)) - hanh doanh cua thong cong tan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (thien thanh)) - hanh doanh cua thong cong tan phan cau*.