Perhaps you should try some spelling variations:
lang van » dang van, hoang van, giang van
tang van » dang van, hoang van, trong van
toc sac » toc sach, toc san, hoc sach
hieu vu » hieu va, hieu ve, hieu su
dinh vi » dinh ve, dinh viet, dinh tri
cua tre » cua te, cuu tre, cua triet
vu cam » vu cham, vu cao, va cam
xuc va » duc va, tuc va, luc va

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: toc sac o ((lang van) OR (tang van)) hoe. hieu vu cam xuc va ((hanh vi) OR (dinh vi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac o ((lang van) OR (tang van)) hoe. hieu vu cam xuc va ((hanh vi) or (dinh vi)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sac o ((lang van) OR (tang van)) hoe. hieu vu cam xuc va ((hanh vi) or (dinh vi)) cua tre*.