Perhaps you should try some spelling variations:
"smart social surveys." » "smart topical surveys.", "small social surveys.", "art social surveys.", "sport social surveys."
"impact social surveys." » "impact topical surveys.", "impact socio surveys.", "impact soil surveys.", "impacts societal surveys."
"smart skills series." » "smart skills surveys.", "smart skills service.", "smart skills studies.", "soft skills series.", "what skills series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("smart skills series.") or ((("smart social surveys.") OR ("impact social surveys."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("smart skills series.") OR ((("smart social surveys.") OR ("impact social surveys.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"smart skills series.\") or (((\"smart social surveys.\") OR (\"impact social surveys.\"))))".
• Removing quotes may allow a broader search: (( smart skills series. ) or ((( smart social surveys. ) OR ( impact social surveys. )))).
• Adding a wildcard symbol may retrieve word variants: (("smart skills series.") or ((("smart social surveys.") OR ("impact social surveys."))))*.