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