Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
tuc van » thuc van, truc van, tuc va
cuu tre » cua tre, cau tren, cau treo
y nang » ly nang, v nang, may nang
va cau » van cau, va dau, va cao
vi cuu » vi luu, vinh cuu

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 (va cac)) tuc van thanh vi cuu 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 (va cac)) tuc van thanh vi cuu 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 (va cac)) tuc van thanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (ky nang)) xa hoi. lieu ((va cau) or (va cac)) tuc van thanh vi cuu tre*.