Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien lang » hieu lang, tien lang, hien trang
trinh van » trinh han, trinh quan, trinh toan
van bang » van ban, van nang, von bang
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
tran ban » tranh ban, tran van, 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 lang - hanh trinh van bang ((cong tan) OR (cong san)) tran ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien lang - hanh trinh van bang ((cong tan) OR (cong san)) tran ban".
• Adding a wildcard symbol may retrieve word variants: hoc hien lang - hanh trinh van bang ((cong tan) OR (cong san)) tran ban*.