Perhaps you should try some spelling variations:
"total investment insurance system." » "total investment finance system.", "social investment insurance system.", "global investment insurance system.", "rural investment insurance system."
"real investment financing sources." » "real investment banking sources.", "real government financing sources.", "real investment planning sources.", "real investment financial resources.", "real investment funding sources.", "rural investment financing sources.", "direct investment financing sources.", "social investment financing sources."

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

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