Perhaps you should try some spelling variations:
qua tham » qua cham, qua than, qua thanh
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
vang xa » lang xa, ang xa, dang xay
mang xa » lang xa, mang may, dang xay
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
tham o » tham do, cham o, tam o
di cua » dai cua, doi cua, de cua
cua te » cua tu
o va » do va, so va, co va

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: tu sach ly ((vang xa) OR (mang xa)) hoi. hieu qua tham o va hanh di cua te~.
• Adding a wildcard symbol may retrieve word variants: tu sach ly ((vang xa) or (mang xa)) hoi. hieu qua tham o va hanh di cua te*.