Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
hanh vai » hanh vi, hanh va, hanh tai
duoc va » duc va, duoc ma, duong va
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang x ho. ((hieu van) OR (thien van)) lam ((duoc va) or (nuoc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang x ho. ((hieu van) OR (thien van)) lam ((duoc va) OR (nuoc va)) hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang x ho. ((hieu van) OR (thien van)) lam ((duoc va) or (nuoc va)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang x ho. ((hieu van) OR (thien van)) lam ((duoc va) or (nuoc va)) hanh vai cua tre*.