Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
duong cong » dung cong, luong cong, duong trong
trinh va » trinh van, trinh vat, trinh ve
va duong » van duong, va tuong, va huong
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hien) or (toc thieu)) xanh - hanh trinh va duong cong tan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (toc thieu)) xanh - hanh trinh va duong cong tan toan tap.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (toc thieu)) xanh - hanh trinh va duong cong tan toan tap*.