Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sang cho » danh cho, dung cho, sang tao
cua cau » cua chu, cua cay, cua can
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
cho hoc » co hoc, khoa hoc
ty sang » ty xang, ty hang, duy sang
anh vi » hanh vi, anh va, anh ve

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) OR (toc sach)) ty sang cho hoc. hieu qua cac xuc van anh vi ((cua cau) or (cua cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty sang cho hoc. hieu qua cac xuc van anh vi ((cua cau) OR (cua cac))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty sang cho hoc. hieu qua cac xuc van anh vi ((cua cau) or (cua cac))*".