Perhaps you should try some spelling variations:
nang lai » nang tai, mang lai, nang cai
chat luc » chat xuc, chat lua, nhan luc
van hanh » van thanh, ban hanh, van anh
hanh dai » hanh tai, hanh dao, vanh dai
lai hoi » dai hoi, lai hoa, lai roi
hieu su » hieu sau, tieu su, hieu so
su chat » su phat, du chat, so chat
luc van » luoc van, luu van, duc van
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

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