Perhaps you should try some spelling variations:
thanh dong » thanh duong, thanh cong, hanh dong
thong cong » trong cong, tong cong, thong thong
tieu xanh » tieu danh, chieu xanh, dieu hanh
bang cong » dang cong, bang song, hang cong
toan cao » toan tap
toan ban » van ban
dong va » dung va, dong ha, luong va

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