Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh van
thanh hai » thanh phan, thanh hoa, thanh san
kho tang » cao tang
ky tang » ky nang, ky dang, ky trong
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
su sac » su sach, su cac, su xac
ve cao » va cao, ve bao, ve cac

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

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