Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hanh dai » hanh tai, hanh dao, vanh dai
nang xa » nang x, lang xa, nang ma
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
dam tu » nam tu, cam tu, tam tu
cua te » cua tu

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 xa hoi. hieu ve ((nam thuc) or (dam 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 xa hoi. hieu ve ((nam thuc) OR (dam tu)) va hanh dai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang xa hoi. hieu ve ((nam thuc) or (dam tu)) va hanh dai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang xa hoi. hieu ve ((nam thuc) or (dam tu)) va hanh dai ((cua tre) OR (cua te))*.