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 va, hanh tai
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
cac loc » cac lop, cac toc, cac hoc
van cac » van hac, van cau, van bac
nang co » nang cao, nang doc, nang noi
sac ky » cac ky, sai ky
loc va » hoc va, luc va
nang o » nang ho, nang ro, nang x
tu sac » tu sach, tu cac, tu san

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