Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang cua » mang cua, hang ca, huong cua
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam hoc » am hoc, cam hoa, cac hoc
cao hoc » co hoc, cho hoc, chat hoc
va hang » van hang, va nang, va lang
cua cua » cua chua, ca cua, qua cua

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

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