Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
nhan cuc » nhan cuoc, nhanh cuc, nhan luc
su triet » su viet, su tien, ve triet
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cuc ban » cua ban, cac ban, cuu ban
nang xa » nang x, nang ma, mang xa
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((nang xa) or (lang xa)) hoi. hieu va nhan cuc ban hanh vi ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang xa) OR (lang xa)) hoi. hieu va nhan cuc ban hanh vi ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang xa) or (lang xa)) hoi. hieu va nhan cuc ban hanh vi ((va triet) or (su triet))*.