Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
tan thanh » tran thanh, tang thanh, toan thanh
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
lai cua » dai cua, hai cua, lai chau
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
x hoi » xa hoi, o hoi, 5 hoi

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

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