Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
va phuong » va thuong, cac phuong
doc hieu » toc thieu, hoc thieu, hoc hien
ho chieu » theo chieu, hoc thieu, doi chieu
va thong » va thuong, he thong, va cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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

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