Perhaps you should try some spelling variations:
va triet » va trien, cua triet, va viet
ve triet » va trien, su triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
qua cau » quan cau, qua cac, qua ca
cau luc » cau truc, cau phuc
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va

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: su sach ky nang xa hoi. hieu qua cau luc va hanh vi ((((va triet) OR (va thiet))) OR (ve triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu qua cau luc va hanh vi ((((va triet) OR (va thiet))) or (ve triet))~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu qua cau luc va hanh vi ((((va triet) OR (va thiet))) or (ve triet))*.