Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac toc » cac toi, cac nuoc, cac thoi
toc gia » toc giay, tac gia, quoc gia
su cac » tu cac, su can, eu cac
su cao » cu cao, vu cao, su co
vi cua » vai cua, di cua

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