Perhaps you should try some spelling variations:
ban hang » ngan hang
pham dua » pham duc, pham duy, pham cua
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ty dang » ty xang, ky dang, ty hang
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 ty dang xa hoi. hieu ve pham dua ((ban hanh) OR (ban hang)) vai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty dang xa hoi. hieu ve pham dua ((ban hanh) OR (ban hang)) vai ((cuu tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty dang xa hoi. hieu ve pham dua ((ban hanh) OR (ban hang)) vai ((cuu tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sach ty dang xa hoi. hieu ve pham dua ((ban hanh) OR (ban hang)) vai ((cuu tre) or (cua te))*.