Perhaps you should try some spelling variations:
van hieu » cao hieu
danh vai » danh sai, danh va, doanh van
te sach » toc sach
sach xu » sach xa, cach xu, mach xu
xu dang » su dang, vu dang, xo dang
van hoe » van hoc, van hien
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach xu dang ((((van hoe) OR (van hieu))) or (van hoa)). hieu qua cac xuc va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach xu dang ((((van hoe) OR (van hieu))) OR (van hoa)). hieu qua cac xuc va danh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach xu dang ((((van hoe) OR (van hieu))) or (van hoa)). hieu qua cac xuc va danh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach xu dang ((((van hoe) OR (van hieu))) or (van hoa)). hieu qua cac xuc va danh vai cua tre*.