Perhaps you should try some spelling variations:
chau tho » chat thom, cau thi, phu tho
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
than luc » nhan luc, than duc, thanh luu
luc van » luoc van, luu van, duc van
va than » va thanh, van than, va phan
hieu va » lieu va, hieu qua
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
sai ky » sac ky
ma hoi » xa hoi, ma hoa, me hoi
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang ((ma hoi) or (((mai hoi) or (dai hoi)))). hieu va than luc van hanh lai chau tho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ((ma hoi) OR (((mai hoi) OR (dai hoi)))). hieu va than luc van hanh lai chau tho.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ((ma hoi) or (((mai hoi) or (dai hoi)))). hieu va than luc van hanh lai chau tho*.