Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
thong cong » trong cong, tong cong, thong thong
hien lang » tien lang, hien trang, khien bang
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hien lang) or (hieu lang)) - doanh doanh cua thong cong tan ((phan cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hien lang) OR (hieu lang)) - doanh doanh cua thong cong tan ((phan cau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: doi ((hien lang) or (hieu lang)) - doanh doanh cua thong cong tan ((phan cau) or (than cap))*.