Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
van thanh » van tuan
thu sach » tu sach, thuat sach, thuoc sach
thai cua » than cua, tai cuc, tri cua
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
nang ho » nang hoc, nang co, tang ho
ho lai » o lai
tu san » thu san, tu ban, tu can
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu san)) ky nang ho lai. hieu ve cac xuc ((van thanh) OR (ban thanh)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu san)) ky nang ho lai. hieu ve cac xuc ((van thanh) OR (ban thanh)) thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (tu san)) ky nang ho lai. hieu ve cac xuc ((van thanh) OR (ban thanh)) thai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu san)) ky nang ho lai. hieu ve cac xuc ((van thanh) OR (ban thanh)) thai cua tre*.