Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hanh dai » hanh tai, hanh dao, vanh dai
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
te sai » te tai, te bai, te lai
sai ky » sac ky
tam tu » nam tu, cam tu, dam tu
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang x hoi. hieu ve ((nam thuc) or (tam tu)) va hanh dai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang x hoi. hieu ve ((nam thuc) OR (tam tu)) va hanh dai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sai ky nang x hoi. hieu ve ((nam thuc) or (tam tu)) va hanh dai ((cua tre) or (cua te))*.