Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
chat luoc » chat luong, chat hoc, chat xuc
hieu van » hieu va, thien van, lieu va
van chat » cao chat
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang x hoi. hieu van chat luoc ((van hanh) or (van minh)) vi ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu van chat luoc ((van hanh) OR (van minh)) vi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. hieu van chat luoc ((van hanh) or (van minh)) vi ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu van chat luoc ((van hanh) or (van minh)) vi ((cua triet) OR (va triet))*.