Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
hoi cua » hoi chuc
dan hoi » dan hoc, dai hoi, van hoi
hieu ve » hieu van
cam luc » cam xuc, cau luc
va dan » ca dan, va dao, va dau
luc va » duc va, tuc va, loc va
te san » te ban, tu san, ta san
ke san » ke dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te san) or (ke san)) ky nang x ho. ((hieu ve) OR (hieu va)) cam luc va dan hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te san) OR (ke san)) ky nang x ho. ((hieu ve) OR (hieu va)) cam luc va dan hoi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te san) or (ke san)) ky nang x ho. ((hieu ve) OR (hieu va)) cam luc va dan hoi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te san) or (ke san)) ky nang x ho. ((hieu ve) OR (hieu va)) cam luc va dan hoi cua tre*.