Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
hanh vai » hanh vi, hanh tai, hanh van
hieu van » hieu va, thien van, lieu va
hanh va » hang va, hanh vi
cac loc » cac lop, cac toc, cac hoc
van cac » van hac, van cau, van bac
loc va » hoc va, luc va
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
tu sac » tu sach, tu cac, tu san
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang o hoi. hieu van cac loc va ((hanh vai) OR (hanh va)) ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang o hoi. hieu van cac loc va ((hanh vai) OR (hanh va)) ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang o hoi. hieu van cac loc va ((hanh vai) OR (hanh va)) ((cua triet) or (su triet))*".