Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hanh va » hang va, hanh vi
vuc van » duc van, luc van, thuc van
cau vuc » cau luc, cau truc, cau phuc
hieu va » lieu va, hieu qua
va cau » van cau, va cac, va dau
ma hoi » mai hoi, ma hoa, me hoi
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang ((ma hoi) OR (xa hoi)). hieu va cau vuc van ((hang tai) OR (hanh va)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang ((ma hoi) OR (xa hoi)). hieu va cau vuc van ((hang tai) or (hanh va)) cua te~".
• Adding a wildcard symbol may retrieve word variants: su sach ty xang ((ma hoi) OR (xa hoi)). hieu va cau vuc van ((hang tai) or (hanh va)) cua te*.