Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van nang » van quang, van ban, van dong
ban hanh » ban hang
va triet » va thiet, va trien, ve triet
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
va nang » da nang, cam nang, kha nang
luc ban » duc ban, cuc ban, luc bat
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 nang) or (van nang)) luc 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 hoi. hieu ((va nang) OR (van nang)) luc ban hanh vi ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu ((va nang) or (van nang)) luc ban hanh vi ((va triet) or (su triet))*.