Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
cao duc » dao duc, cao suc, giao duc
ky lang » ky nang, ky tang, tay lang
hai cua » thai cua, dai cua, hoi cua
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
cac duc » cac du, cac dac, cac nuoc
su sac » su sach, su cac, su xac

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: su sac ((ky lang) OR (ky dang)) xa hoi. hieu ve ((cac duc) OR (cao duc)) va thanh hai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky lang) or (ky dang)) xa hoi. hieu ve ((cac duc) OR (cao duc)) va thanh hai cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky lang) or (ky dang)) xa hoi. hieu ve ((cac duc) OR (cao duc)) va thanh hai cua triet*.