Perhaps you should try some spelling variations:
ban thanh » ban hang
va thanh » gia thanh, va tinh, le thanh
ban hanh » ban hang
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. lieu va cam xuc ((va thanh) or (((ban thanh) OR (ban hanh)))) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. lieu va cam xuc ((va thanh) OR (((ban thanh) OR (ban hanh)))) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. lieu va cam xuc ((va thanh) or (((ban thanh) OR (ban hanh)))) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. lieu va cam xuc ((va thanh) or (((ban thanh) OR (ban hanh)))) vi cua tre*.