Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
quang ban » quang binh, quang tuan, quang tran
ban cong » bang cong, van cong, phan cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
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) or (canh tranh)) quang ban cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh trinh) OR (canh tranh)) quang ban cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh trinh) or (canh tranh)) quang ban cong tac toan cau*.