Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hieu lang » chieu sang, hieu quang, nhieu tang
quan ban » quang ban, qua ban, quan van
ban cong » bang cong, van cong, phan cong
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tai
toan tap » toan ban
toan cao » toan ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh trinh quan ban cong tan ((((toan cau) or (toan tap))) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh trinh quan ban cong tan ((((toan cau) OR (toan tap))) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh trinh quan ban cong tan ((((toan cau) or (toan tap))) or (toan cao))*.