Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
so sach » so sanh, bo sach, co sach
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
cam duc » cam xuc, cao duc, nam duoc
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky lang xa hoi. lieu va ((cam duc) or (pham duc)) van thanh vi ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky lang xa hoi. lieu va ((cam duc) OR (pham duc)) van thanh vi ((cua triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: so sach ky lang xa hoi. lieu va ((cam duc) or (pham duc)) van thanh vi ((cua triet) or (cuu tre))*.