Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
khoan cam » khoa cam, khoan va, phan cam
trinh va » trinh van, trinh vat, trinh ve
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
ha tinh » va tinh, may tinh
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: pho ha tinh - hanh trinh va dang ((cong san) or (cong tan)) khoan cam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: pho ha tinh - hanh trinh va dang ((cong san) OR (cong tan)) khoan cam.
• Adding a wildcard symbol may retrieve word variants: pho ha tinh - hanh trinh va dang ((cong san) or (cong tan)) khoan cam*.