Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nhan duc » nhan duoc, nhan luc, phan duc
su triet » su viet, su tien
va triet » va thiet, va trien, cua triet
ban hang » ngan hang
ve triet » va trien
va nhan » van nhan, ca nhan, va phan
hieu va » lieu va, hieu qua
duc ban » duc tan, duc van, dua ban
sach ky » sac ky, sach y, sach ty
hang vi » hang va, hanh vi, hang di
nang xa » nang x, lang xa, nang ma

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 ky nang xa hoi. hieu va nhan duc ban hang vi ((va triet) or (((su triet) OR (ve triet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu va nhan duc ban hang vi ((va triet) OR (((su triet) OR (ve triet)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu va nhan duc ban hang vi ((va triet) or (((su triet) OR (ve triet))))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu va nhan duc ban hang vi ((va triet) or (((su triet) OR (ve triet))))*.