Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lam » thanh lap, hanh lam, thanh nam
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
lam cua » nam cua, lam chat
tu cach » tu cac
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

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