Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
qua pham » quan pham, qua cham, qua phan
quy pham » su pham, quy chau, my pham
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
dinh di » dinh du, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach v nang xa hoi. hieu ((qua pham) or (quy pham)) duc va dinh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang xa hoi. hieu ((qua pham) OR (quy pham)) duc va dinh di cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach v nang xa hoi. hieu ((qua pham) or (quy pham)) duc va dinh di cua tre*.