Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thanh thong » thanh hong, thanh thang, thanh chuong
tong cong » trong cong, cong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap
doi chi » doi khi
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (doc hieu)) xanh - ((thanh thong) OR (thanh thuong)) va tong cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (doc hieu)) xanh - ((thanh thong) OR (thanh thuong)) va tong cong san toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chi) or (doc hieu)) xanh - ((thanh thong) OR (thanh thuong)) va tong cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (doc hieu)) xanh - ((thanh thong) OR (thanh thuong)) va tong cong san toan cao*.