Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hieu voi » hieu moi, lieu voi, hieu loi
voi pham » vi pham, toi pham, loai pham
phan lap » phan dau
ty hang » ly hang, thi hang, thu hang
tao hoi » tao khoi, tao boi, tay hoi
va phan » van phan, va phat, va phap
cua tuc » cua duc, cua tu, cua thuoc
cua te » cua tu

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: hoc sach ((ty hang) OR (ty xang)) tao hoi. hieu voi pham duc va phan lap ((cua te) OR (cua tuc))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ((ty hang) OR (ty xang)) tao hoi. hieu voi pham duc va phan lap ((cua te) or (cua tuc))~".
• Adding a wildcard symbol may retrieve word variants: hoc sach ((ty hang) OR (ty xang)) tao hoi. hieu voi pham duc va phan lap ((cua te) or (cua tuc))*.