Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
nang xa » nang x, lang xa, nang ma
cam tuc » cam xuc, nam thuc, dam thuc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
te sac » te cac, te san
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 sac) OR (te sach)) ky nang xa hoi. hieu van ((cam tuc) or (cam tu)) va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky nang xa hoi. hieu van ((cam tuc) OR (cam tu)) va hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te sach)) ky nang xa hoi. hieu van ((cam tuc) or (cam tu)) va hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sac) OR (te sach)) ky nang xa hoi. hieu van ((cam tuc) or (cam tu)) va hanh dai cua tre*.