Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
nano cho » nang cho, nang chon, danh cho
van hanh » van thanh, ban hanh, van anh
nano cuo » nan cua, nang cua, nano cau
hieu van » hieu va, thien van, lieu va
cac xuc » cam xuc, cac nuoc, chat xuc
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
van cac » van hac, van cau, van bac
cua cau » cua cac, cua chu, cua cay
va cua » va chua, via cua, ca cua

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