Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
duc ban » duc tan, dua ban, duc man
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, dua tren
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho

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

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