Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang vi » hang va, hanh vi, khang voi
hang di » hang doi, hang dien, hang dich
cac tac » cac toc, cac bac, cac dac
hieu ve » hieu va, hieu van
so sanh » do sanh
v nang » va nang, vu nang, van nang
tac va » tac da, tac xa, tuc va
y nang » ky nang, ly nang, may nang
ve cac » va cac, vien cac

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: so sanh ((y nang) OR (v nang)) xa hoi. hieu ve cac tac va ((hang di) OR (hang vi)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ((y nang) OR (v nang)) xa hoi. hieu ve cac tac va ((hang di) or (hang vi)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: so sanh ((y nang) OR (v nang)) xa hoi. hieu ve cac tac va ((hang di) or (hang vi)) cua triet*.