Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thi chieu » thi chien, thi hieu, theo chieu
hanh tang » hanh trang, anh tang, hanh mang
tong cong » trong cong, cong cong, dung cong
theo chu » theo chieu, cho chu, chao chu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (thi chieu)) xanh - ((hanh tang) or (hanh trinh)) va tong cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (thi chieu)) xanh - ((hanh tang) OR (hanh trinh)) va tong cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (thi chieu)) xanh - ((hanh tang) or (hanh trinh)) va tong cong san toan tap*.