Perhaps you should try some spelling variations:
"smart infrastructural solutions" » "smart infrastructure solutions", "smart infrastructures solutions", "smart infrastructural migrations", "shared infrastructural solutions", "scale infrastructural solutions"
"smart infrastructural politics" » "smart infrastructure politics", "smart infrastructural utilities", "smart infrastructure policies", "smart infrastructures politics", "shared infrastructural politics", "scale infrastructural politics"
"smart infrastructure solution" » "smart infrastructure solutions", "smart infrastructures solutions", "smart infrastructure evolution", "market infrastructure solution", "market infrastructures solution", "transport infrastructure solution"

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: (((("smart infrastructural solutions") OR ("smart infrastructural politics"))) OR ("smart infrastructure solution")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"smart infrastructural solutions\") OR (\"smart infrastructural politics\"))) or (\"smart infrastructure solution\"))".
• Removing quotes may allow a broader search: (((( smart infrastructural solutions ) OR ( smart infrastructural politics ))) or ( smart infrastructure solution )).
• Adding a wildcard symbol may retrieve word variants: (((("smart infrastructural solutions") OR ("smart infrastructural politics"))) or ("smart infrastructure solution"))*.