Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
toan luong » toan uong, toan thuong, tien luong
luong cong » dung cong, trong cong, cong cong
doi chieu » doc hieu, doi chi, mot chieu
hanh tinh » nhanh tinh, thanh tinh, canh tinh
ho chieu » theo chieu, hoc thieu, mot chieu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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: ((doi chieu) or (ho chieu)) sang - ((hanh tinh) OR (hanh trinh)) toan luong cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) sang - ((hanh tinh) OR (hanh trinh)) toan luong cong tan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (ho chieu)) sang - ((hanh tinh) OR (hanh trinh)) toan luong cong tan toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) sang - ((hanh tinh) OR (hanh trinh)) toan luong cong tan toan ban*.