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
su triet » su viet, su tien
ve triet » va trien
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luc ban » duc ban, cuc ban, luc bat

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