Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
ty nang » ky nang, ty xang, ty hang
cho hoc » khoa hoc
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
van anh » van thanh, tuan anh, van minh
anh hoi » anh noi, anh hoc, anh khoa
hoi cua » hoi chuc
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (doc sach)) ty nang ((cho hoc) or (co hoc)). hieu ve cac xuc van anh hoi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ty nang ((cho hoc) OR (co hoc)). hieu ve cac xuc van anh hoi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ty nang ((cho hoc) or (co hoc)). hieu ve cac xuc van anh hoi cua cau*".