Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach chu » sach che, sach thu, sach thue
chu bang » thu bang, chuc nang, chu quang
qua cham » qua hai, qua cac, va cham
bang xa » lang xa, bang va, mang xa
hanh ly » khanh ly, hanh ky, hang ly
soc va » hoc va, loc va, doc va
ly cua » le cua
cua te » cua tu

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 chu bang xa hoi. hieu qua cham ((soc va) OR (duc va)) hanh ly cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach chu bang xa hoi. hieu qua cham ((soc va) OR (duc va)) hanh ly cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach chu bang xa hoi. hieu qua cham ((soc va) OR (duc va)) hanh ly cua te*.