Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
cao duc » dao duc, cao suc, giao duc
cam duc » cam xuc, pham duc, nam duoc
hieu va » lieu va, hieu qua
ty ang » ty hang, ty anh
vi cua » vai cua, di cua
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 ang) OR (ty xang)) xa hoi. hieu va ((cam duc) or (cao duc)) ban thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty ang) OR (ty xang)) xa hoi. hieu va ((cam duc) OR (cao duc)) ban thanh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty ang) OR (ty xang)) xa hoi. hieu va ((cam duc) or (cao duc)) ban thanh vi cua te*".