Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
duong cong » dung cong, luong cong, duong trong
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh bang, anh dang, anh nang
va duong » van duong, va tuong, va huong
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo tieu) or (ho chieu)) tinh - ((anh tang) or (hanh trinh)) va duong cong tac tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (ho chieu)) tinh - ((anh tang) OR (hanh trinh)) va duong cong tac tran cau.
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (ho chieu)) tinh - ((anh tang) or (hanh trinh)) va duong cong tac tran cau*.