Perhaps you should try some spelling variations:
"smart infrastructural solutions" » "smart infrastructure solutions", "smart infrastructures solutions", "smart infrastructure solution", "shared infrastructural solutions", "scale infrastructural solutions"
"smart infrastructural politics" » "smart infrastructure politics", "smart infrastructural utilities", "smart infrastructure policies", "shared infrastructural politics", "scale infrastructural politics"
"smart infrastructures politics" » "smart infrastructure politics", "smart infrastructure policies", "smart infrastructures policy", "market infrastructures politics", "data infrastructures politics"
"scale infrastructure policy" » "scale infrastructure project", "scale infrastructure projects", "space infrastructure policy", "scalable infrastructure policy", "secure infrastructure policy"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("scale infrastructure policy") OR ((((("smart infrastructural politics") OR ("smart infrastructural solutions"))) OR ("smart infrastructures politics"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"scale infrastructure policy\") or (((((\"smart infrastructural politics\") OR (\"smart infrastructural solutions\"))) or (\"smart infrastructures politics\"))))*".
• Removing quotes may allow a broader search: (( scale infrastructure policy ) or ((((( smart infrastructural politics ) OR ( smart infrastructural solutions ))) or ( smart infrastructures politics ))))*.