Perhaps you should try some spelling variations:
dinh chuc » dinh chi, dinh thuy, dinh cuu
va triet » va thiet, va trien, ve triet
thu sac » thu sach, thu san, thu xac
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
dinh cu » dinh cuu, dinh chau, dinh chi
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang xa hoi. ((hieu ve) or (hieu qua)) pham duc va ((dinh cu) OR (dinh chuc)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang xa hoi. ((hieu ve) OR (hieu qua)) pham duc va ((dinh cu) OR (dinh chuc)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky nang xa hoi. ((hieu ve) or (hieu qua)) pham duc va ((dinh cu) OR (dinh chuc)) va triet".
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang xa hoi. ((hieu ve) or (hieu qua)) pham duc va ((dinh cu) OR (dinh chuc)) va triet*.