Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
toc sach » hoc sach, doc sach, thuoc sach
hanh dai » hanh tai, hanh dao, vanh dai
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
xuc va » duc va, tuc va, luc va
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (toc sach)) ky nang x hoi. hieu ve cham ((xuc va) or (tuc xa)) hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (toc sach)) ky nang x hoi. hieu ve cham ((xuc va) OR (tuc xa)) hanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (toc sach)) ky nang x hoi. hieu ve cham ((xuc va) or (tuc xa)) hanh dai cua te*.