Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
dang xay » dang van, van xay
su triet » su tien, ve triet
ban hanh » ban hang
loai ban » loai san, loai lan, loai van
ke phan » kenh phan, ke thang
sach ty » sach y, sach tu, sach thu
ve phan » va phan, ve phat, vi phan
xay hoi » xa hoi, tay hoi, cay phoi
ty dang » ty xang, ky dang, ty hang
su viet » so viet

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ty dang xay hoi. hieu ((ve phan) or (ke phan)) loai ban hanh vi ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ty dang xay hoi. hieu ((ve phan) OR (ke phan)) loai ban hanh vi ((su triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: nuoc sach ty dang xay hoi. hieu ((ve phan) or (ke phan)) loai ban hanh vi ((su triet) or (su viet))*.