Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nhan cac » nhan cach, phan cac, nhan mac
ban hanh » ban hang
va triet » va thiet, va trien, cua triet
ve triet » va trien
su triet » su viet, su tien
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
cac ban » cac dan, cac van, can ban
y nang » ky nang, ly nang, v nang

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