Perhaps you should try some spelling variations:
ban hanh » ban hang
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu vu » hieu ve, hieu su, dieu vu
hieu va » lieu va, hieu qua
soc ban » hoc ban, coc ban, so ban
cuu tre » cua tre, cau tren, cau treo
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: tu sach y nang xa hoi. ((hieu vu) or (hieu va)) cham soc ban hanh vi ((su triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. ((hieu vu) OR (hieu va)) cham soc ban hanh vi ((su triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. ((hieu vu) or (hieu va)) cham soc ban hanh vi ((su triet) or (cuu tre))*.