Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
tinh vi » trinh vi, tinh voi, dinh vi
tinh va » tich va, trinh van, trinh vat
va coc » va cuoc, va cac, va hoc
luc va » tuc va, loc va
cua te » cua tu

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 ky tang xa hoi. hieu va coc ((luc va) or (duc va)) ((tinh vi) OR (tinh va)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky tang xa hoi. hieu va coc ((luc va) OR (duc va)) ((tinh vi) OR (tinh va)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky tang xa hoi. hieu va coc ((luc va) or (duc va)) ((tinh vi) OR (tinh va)) cua te*".