Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » canh tranh, hanh chinh
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
trinh va » trinh van, trinh vat, trinh ve
cong ban » cong bang, cong san, cong tan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
va hang » van hang, 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: hoc hieu nganh - hanh trinh va hang cong ban ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh trinh va hang cong ban ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh trinh va hang cong ban ((toan cau) or (toan ban))*.