Perhaps you should try some spelling variations:
qua pham » quan pham, quy pham, qua cham
pham duy » pham duc
ban hang » ngan hang
su sach » so sach, vu sach
xang xa » lang xa, mang xa, ang xa
duy ban » uy ban, duy van, duy can
dinh cu » dinh cuu, dinh chuc, dinh chau
y xang » ty xang
vi cuu » vi luu, vinh cuu

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 qua pham duy ban hang ((vi cuu) or (dinh cu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y xang xa hoi. hieu qua pham duy ban hang ((vi cuu) OR (dinh cu)) tre*.