Perhaps you should try some spelling variations:
pham sach » pham anh, nam sach, pham hanh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cua tre » cuu tre, cua triet, dua tren
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
sach va » sach xa, sach ha, sach dao
vu pham » su pham, vi pham, vu kham
hieu vu » hieu va, hieu ve, hieu su
long ha » dong ha, cong ha, dong hoa
lang xa » lang ha, dang xay, lang van
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 ((lang xa) or (long ha)) hoi. hieu vu pham sach va hanh di ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((lang xa) OR (long ha)) hoi. hieu vu pham sach va hanh di ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach ty ((lang xa) or (long ha)) hoi. hieu vu pham sach va hanh di ((cua tre) or (cua te))*.