Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
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, tao duoc
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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) OR (giao duc)) ban thanh vai 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) OR (giao duc)) ban thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu va ((cao duc) OR (giao duc)) ban thanh vai cua tre*.