Perhaps you should try some spelling variations:
cua viet » hoa viet, cua vat, cua dieu
van hanh » van thanh, ban hanh, van anh
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
vuc van » duc van, luc van, thuc van
ca viet » va viet, co viet, hoa viet
ty nang » ky nang, ty xang, ty hang
ve cac » va cac, vien cac
va cao » va cac, va co, va dao
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: so sach ty nang x hoi. hieu ((ve cac) or (va cao)) vuc van hanh vi ((cua viet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang x hoi. hieu ((ve cac) OR (va cao)) vuc van hanh vi ((cua viet) OR (ca viet)).
• Adding a wildcard symbol may retrieve word variants: so sach ty nang x hoi. hieu ((ve cac) or (va cao)) vuc van hanh vi ((cua viet) or (ca viet))*.