Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh hoi » hanh thoi, hanh noi, hanh hoa
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu va, hieu van
dua ban » dia ban, cua ban, qua ban
hoi cua » hoi chuc
su cac » tu cac, su cao, su can
ve cam » ve cham, ve cac, va cam

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 cac ((ky tang) OR (ky nang)) xa hoi. hieu ve cam ((dua ban) OR (duc tan)) hanh hoi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ((ky tang) OR (ky nang)) xa hoi. hieu ve cam ((dua ban) or (duc tan)) hanh hoi cua triet~".
• Adding a wildcard symbol may retrieve word variants: su cac ((ky tang) OR (ky nang)) xa hoi. hieu ve cam ((dua ban) or (duc tan)) hanh hoi cua triet*.