Perhaps you should try some spelling variations:
pham cuc » pham chuc, pham duc, pham cua
trinh ve » trinh he, trinh va, trinh viet
trinh vi » trinh va, trinh viet, trinh van
tu sach » thu sach, su sach, te sach
cuc ban » cua ban, cac ban, cuu ban
ve pham » vi pham, v pham, ve phan
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
dong ha » dong hoa, dong va, dong hoc
dang xa » dang xay, lang xa, dang ha
cua tre » cua te, cuu tre, cua triet

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 ty ((dang xa) OR (dong ha)) hoi. hieu ve pham cuc ban ((trinh vi) OR (trinh ve)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((dang xa) or (dong ha)) hoi. hieu ve pham cuc ban ((trinh vi) OR (trinh ve)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((dang xa) or (dong ha)) hoi. hieu ve pham cuc ban ((trinh vi) OR (trinh ve)) cua tre*.