Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thien van » thi van
nang cho » nang chon, ngang cho, nang cao
toc sach » hoc sach, doc sach, nuoc sach
ty nang » ky nang, ty xang, ty hang
cho hoc » co hoc, khoa hoc
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
cua cau » cua cac, cua chu, cua cay
anh vi » hanh vi, anh va, anh vu
anh ve » hanh ve, anh va, anh viet

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