Perhaps you should try some spelling variations:
thinh thai » tinh thai, hinh thai, sinh thai
van thinh » van thanh, van chinh, van minh
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, tri cua
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach ty, sach kem
hieu ve » hieu va
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) nang o hai. ((hieu ve) OR (hieu van)) cac xuc van thinh thai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach y)) nang o hai. ((hieu ve) or (hieu van)) cac xuc van thinh thai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach y)) nang o hai. ((hieu ve) or (hieu van)) cac xuc van thinh thai cua tre*.