Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
canh tinh » hanh tinh, canh tranh, nhanh tinh
manh tinh » man tinh, manh binh, hanh tinh
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan cac » nhan cach, phan dau, phan lap
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 manh - ((canh tinh) or (manh tinh)) va hang cong tac phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((canh tinh) OR (manh tinh)) va hang cong tac phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((canh tinh) or (manh tinh)) va hang cong tac phan cac*.