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 » cua te, cuu tre, cua triet
te sai » te tai, te bai, te hai
te lai » te tai, te bai
cam tu » cam thu, nam tu, dam 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) OR (te lai)) ky nang xa hoi. hieu ve ((nam thuc) or (cam tu)) va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te lai)) ky nang xa hoi. hieu ve ((nam thuc) OR (cam tu)) va hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sai) OR (te lai)) ky nang xa hoi. hieu ve ((nam thuc) or (cam tu)) va hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sai) OR (te lai)) ky nang xa hoi. hieu ve ((nam thuc) or (cam tu)) va hanh dai cua tre*.