Perhaps you should try some spelling variations:
thien van » thi van
hoc sach » hoc sinh, hoc cac, hoc anh
sach ty » sach y, sach tu, sach thu
cau luc » cau truc, cau phuc
cua tre » cua te, cuu tre, cua triet
cam luc » cam xuc
dang xa » dang xay, lang xa, dang ha
ty dang » ty xang, ky dang, ty hang

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: hoc sach ty dang xa hoi. thien van ((cam luc) OR (cau luc)) va ((hanh vi) OR (hang va)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ty dang xa hoi. thien van ((cam luc) OR (cau luc)) va ((hanh vi) or (hang va)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: hoc sach ty dang xa hoi. thien van ((cam luc) OR (cau luc)) va ((hanh vi) or (hang va)) cua tre*.