Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
van hanh » ban hanh, van anh, van ban
thai cua » than cua, tai cuc, tri cua
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
o lai » o lao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang o lai. hieu va cac xuc ((van hanh) or (van thanh)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang o lai. hieu va cac xuc ((van hanh) OR (van thanh)) thai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang o lai. hieu va cac xuc ((van hanh) or (van thanh)) thai cua tre*.