Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
lai cua » hai cua, lai chau, thai cua
va cao » va cac, va co, va dao

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 ty nang xa hoi. hieu va cao duc ((ban thanh) or (ngan hang)) ((lai cua) OR (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu va cao duc ((ban thanh) OR (ngan hang)) ((lai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu va cao duc ((ban thanh) or (ngan hang)) ((lai cua) OR (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu va cao duc ((ban thanh) or (ngan hang)) ((lai cua) OR (dai cua)) tre*.