Perhaps you should try some spelling variations:
nang van » dang van, tang van, lang van
thanh ca » thanh cha, thanh cac, thanh ha
van hoc » van hoa
hieu va » lieu va
cua tre » cua te, cuu tre, cua triet
vu dan » vu dang, va dan, cu dan
dan ky » van ky
luc va » tuc va, loc va
ca cua » co cua

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: vu dan ky nang van hoc. ((hieu va) OR (hieu qua)) cac ((luc va) OR (duc va)) thanh ca cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu dan ky nang van hoc. ((hieu va) OR (hieu qua)) cac ((luc va) or (duc va)) thanh ca cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu dan ky nang van hoc. ((hieu va) OR (hieu qua)) cac ((luc va) or (duc va)) thanh ca cua tre*.