Perhaps you should try some spelling variations:
than cua » nhan cua, ban cua, gian cua
thai cua » tai cuc, tri cua, dai cua
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
luc va » duc va, loc va
y hang » ly hang, ty hang, yu hang
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

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: so sach y hang xa hoi. hieu ve cam ((luc va) OR (tuc va)) han ((thai cua) OR (than cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y hang xa hoi. hieu ve cam ((luc va) or (tuc va)) han ((thai cua) OR (than cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: so sach y hang xa hoi. hieu ve cam ((luc va) or (tuc va)) han ((thai cua) OR (than cua)) tre*.