Perhaps you should try some spelling variations:
thanh sinh » thanh binh, thanh tinh, thanh vinh
van thanh » ban thanh, van tuan
sinh cua » manh cua, dinh cuu, sinh va
su sach » so sach, vu sach
van cau » van dau, van hau, van chat
tuc van » thuc van, truc van, tuc va
cua tre » cua te, cuu tre, cua triet
y nang » ly nang, v nang, may nang
va cau » va cac, va dau, va cao

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 ((y nang) OR (ky nang)) xa hoi. lieu ((va cau) or (van cau)) tuc van thanh sinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ky nang)) xa hoi. lieu ((va cau) OR (van cau)) tuc van thanh sinh cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) OR (ky nang)) xa hoi. lieu ((va cau) or (van cau)) tuc van thanh sinh cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (ky nang)) xa hoi. lieu ((va cau) or (van cau)) tuc van thanh sinh cua tre*.