Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va triet » va thiet, va trien, ve triet
ban hang » ngan hang
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
hang vi » hang va, hanh vi, hang di
nang xa » nang x, lang xa, nang ma
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 ((nhan luc) or (nang luc)) ban hang 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 ((nhan luc) OR (nang luc)) ban hang vi ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu va ((nhan luc) or (nang luc)) ban hang vi ((va triet) or (su triet))*.