Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
lo ban » co ban, ly ban
lo van » le van, vo van, so van
vi cua » vai cua, di cua

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 xa hoi. ((hieu ve) OR (hieu van)) cac ((lo ban) or (lo van)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. ((hieu ve) OR (hieu van)) cac ((lo ban) OR (lo van)) hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. ((hieu ve) OR (hieu van)) cac ((lo ban) or (lo van)) hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. ((hieu ve) OR (hieu van)) cac ((lo ban) or (lo van)) hanh vi cua triet*.