Perhaps you should try some spelling variations:
hanh trinh » canh tranh
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu
qua nhung » quan nhung, cua nhung, qua chung
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (mot chieu)) xanh - ((hanh trinh) OR (hanh chinh)) qua nhung cong tan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (mot chieu)) xanh - ((hanh trinh) OR (hanh chinh)) qua nhung cong tan toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (mot chieu)) xanh - ((hanh trinh) OR (hanh chinh)) qua nhung cong tan toan tap*.