Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
vat thanh » dat thanh, gat thanh, tat thanh
thu sach » tu sach, thuat sach, thuoc sach
cua viet » ca viet, hoa viet, cua vat
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
ve pham » v pham, ve phan, ve phat

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: thu sach tu nang xa hoi. hieu ((ve pham) OR (vi pham)) duy vat thanh dai cua viet~.
• Adding a wildcard symbol may retrieve word variants: thu sach tu nang xa hoi. hieu ((ve pham) or (vi pham)) duy vat thanh dai cua viet*.