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

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 ((cac duc) or (cao duc)) ((ban thanh) or (ban hang)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu va ((cac duc) OR (cao duc)) ((ban thanh) OR (ban hang)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu va ((cac duc) or (cao duc)) ((ban thanh) or (ban hang)) vai cua te*.