Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cac ban » cac dan, cac van, can ban
van cam » van nam, van lam, van cau
cuc ban » cua ban, cuu ban, duc ban
tu cua » hu cua, vu cua
anh tu » anh tuan
cua te » cua tu
y nang » ky nang, ly nang, v nang
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: toc sach y nang x hoi. hieu van cam ((duc tan) or (((cuc ban) or (cac ban)))) anh tu cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang x hoi. hieu van cam ((duc tan) OR (((cuc ban) OR (cac ban)))) anh tu cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang x hoi. hieu van cam ((duc tan) or (((cuc ban) or (cac ban)))) anh tu cua te*.