Perhaps you should try some spelling variations:
tieu sang » chieu sang, tieu dung, tiem nang
dung cong » dung trong
anh dang » anh dong, anh dung, anh bang
dang tin » dang tinh, dang tien, dong tin
cong tan » cong tac, cong san, cong thanh
tran huu » tran duc
tra cau » tra sau, ta cau, tra cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sang - anh dang tin dung cong tan ((tra cau) or (tran huu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sang - anh dang tin dung cong tan ((tra cau) OR (tran huu)).
• Adding a wildcard symbol may retrieve word variants: theo tieu sang - anh dang tin dung cong tan ((tra cau) or (tran huu))*.