Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
xuc van » duc van, luc van, xuc ban
hieu va » lieu va, hieu qua
hieu ve » hieu van
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
anh vi » hanh vi, anh ve, anh vu
anh va » hanh va
te sac » te sach, te cac, te san
o hoi » co hoi, o hoc, o hai

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 ky nang o hoi. ((hieu ve) or (hieu va)) cam xuc van ((anh vi) OR (anh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang o hoi. ((hieu ve) OR (hieu va)) cam xuc van ((anh vi) OR (anh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang o hoi. ((hieu ve) or (hieu va)) cam xuc van ((anh vi) OR (anh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang o hoi. ((hieu ve) or (hieu va)) cam xuc van ((anh vi) OR (anh va)) cua tre*.