Perhaps you should try some spelling variations:
"real investment financing system." » "real investment banking system.", "real government financing system.", "real investment planning system.", "real investment financial system.", "real investment financial systems.", "rural investment financing system.", "total investment financing system.", "direct investment financing system."
"social investment finance system." » "capital investment finance system.", "initial investment finance system.", "social investment financial system.", "social investment financial systems.", "social investment insurance system."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("social investment finance system.") or ("real investment financing system."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("social investment finance system.") OR ("real investment financing system.")).
• Removing quotes may allow a broader search: (( social investment finance system. ) or ( real investment financing system. )).
• Adding a wildcard symbol may retrieve word variants: (("social investment finance system.") or ("real investment financing system."))*.