Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
doi chieu » doc hieu, doi chi, ho chieu
va luong » van luong, va huong, vi luong
va tuong » va thuong, va thong, xa truong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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: ((doi chieu) or (theo tieu)) xanh - hanh truong ((va luong) OR (va tuong)) cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (theo tieu)) xanh - hanh truong ((va luong) OR (va tuong)) cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (theo tieu)) xanh - hanh truong ((va luong) OR (va tuong)) cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (theo tieu)) xanh - hanh truong ((va luong) OR (va tuong)) cong tan toan cao*.