Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nhan luc » nang luc
ban hanh » ban hang
va triet » va thiet, va trien, cua triet
ve triet » va trien, su triet
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va nhan » van nhan, ca nhan, va phan
luc ban » duc ban, cuc ban, luc bat
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: thu sach ty nang xa hoi. lieu va nhan luc ban hanh vi ((va triet) or (((ve triet) or (su viet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. lieu va nhan luc ban hanh vi ((va triet) OR (((ve triet) OR (su viet)))).
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. lieu va nhan luc ban hanh vi ((va triet) or (((ve triet) or (su viet))))*.