Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hanh trinh » canh tranh, hanh chinh
hieu manh » chieu xanh, dieu hanh, hien hanh
lang cong » dang cong, bang cong, hang cong
trinh va » trinh van, trinh vat, trinh ve
cong van » cong vang, cong san, song van
va lang » va nang, hoa lang
van tan » van tuan, van ban, van tai
tan ban » toan ban, tang ban, van 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 ((hieu manh) or (hieu nganh)) - hanh trinh va lang cong van tan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - hanh trinh va lang cong van tan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (hieu nganh)) - hanh trinh va lang cong van tan ban*.