Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
ve pham » v pham, ve phan, ve phat
lai cua » dai cua, hai cua, lai chau
co hoi » co hoc, co loi
o hoi » o hoc, o hai, o hoa

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

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