Perhaps you should try some spelling variations:
su sach » so sach, vu sach
duc ban » duc tan, duc van, dua ban
cuc ban » cua ban, cac ban, cuu ban
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
anh tu » anh tuan
tu cua » hu cua, vu cua
cua te » cua tu
x hoi » xa hoi, o hoi, 5 hoi

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) or (x ho)). lieu va 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) OR (x ho)). lieu va cam ((duc ban) OR (cuc ban)) anh tu cua te.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((x hoi) or (x ho)). lieu va cam ((duc ban) or (cuc ban)) anh tu cua te*.