Perhaps you should try some spelling variations:
su sach » so sach, vu sach
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
dua ban » dia ban, qua ban, mua ban
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
y xang » ty xang
va cam » va cham, va cac, va cao

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 xang xa hoi. hieu va cam ((dua ban) OR (cua ban)) thanh ((vai cua) or (hai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y xang xa hoi. hieu va cam ((dua ban) OR (cua ban)) thanh ((vai cua) OR (hai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y xang xa hoi. hieu va cam ((dua ban) OR (cua ban)) thanh ((vai cua) or (hai cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sach y xang xa hoi. hieu va cam ((dua ban) OR (cua ban)) thanh ((vai cua) or (hai cua)) te*.