Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
theo chieu » ho chieu, theo chu, thi chieu
cua thong » cua thuong, cua khong, cua tong
anh tang » anh bang, anh nang, anh sang
anh dang » anh dong, anh dung, anh bang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo tieu)) xanh - ((anh tang) OR (anh dang)) cua thong cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) xanh - ((anh tang) OR (anh dang)) cua thong cong san toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo tieu)) xanh - ((anh tang) OR (anh dang)) cua thong cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) xanh - ((anh tang) OR (anh dang)) cua thong cong san toan cao*.