Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thong cong » trong cong, tong cong, thong thong
tieu xanh » tieu danh, chieu xanh, dieu hanh
cua thong » cua thuong, cua khong, cua tong
hang ban » hang luan, hang va, hang tai
toan cao » toan tap
toan ban » van ban
ban cua » ban quan

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 xanh - hang ban cua thong cong thanh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hang ban cua thong cong thanh ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hang ban cua thong cong thanh ((toan cao) or (toan ban))*.