Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
hieu ve » hieu van
hieu va » lieu va, hieu qua
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 sai » te tai, te bai, te lai
sai ky » sac ky
cam tu » cam thu, nam tu, dam 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) OR (hieu va)) ((cam tuc) or (cam tu)) va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang x hoi. ((hieu ve) OR (hieu va)) ((cam tuc) OR (cam tu)) va hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang x hoi. ((hieu ve) OR (hieu va)) ((cam tuc) or (cam tu)) va hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang x hoi. ((hieu ve) OR (hieu va)) ((cam tuc) or (cam tu)) va hanh dai cua tre*.