Perhaps you should try some spelling variations:
van chat » cao chat
chat xuc » chat huu, cam xuc, chao xu
hieu van » hieu va, thien van, lieu va
dang xay » dang van, van xay
cua tre » cua te, cua triet, dua tren
sach va » sach xa, sach ha, sach dao
te sach » toc sach
dang xa » lang xa, dang ha, dang va
cuu tre » cau tren, cau treo
xuc va » duc va, tuc va, luc va
va dau » va dao
dau va » dau ve, lau 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 va ((dang xa) or (dang xay)) hoi. hieu van chat xuc va dau va ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach va ((dang xa) OR (dang xay)) hoi. hieu van chat xuc va dau va ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach va ((dang xa) or (dang xay)) hoi. hieu van chat xuc va dau va ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach va ((dang xa) or (dang xay)) hoi. hieu van chat xuc va dau va ((cua tre) OR (cuu tre))*.