Perhaps you should try some spelling variations:
"smart skills surveys." » "smart skills survey.", "soft skills surveys.", "what skills surveys."
"impact social surveys." » "impact topical surveys.", "impact socio surveys.", "impact soil surveys.", "impacts societal surveys."
"smart skills series." » "smart skills service.", "smart skills studies.", "smart skills survey.", "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 skills surveys.") or ("impact social surveys."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("smart skills series.") OR ((("smart skills surveys.") OR ("impact social surveys.")))).
• Removing quotes may allow a broader search: (( smart skills series. ) or ((( smart skills surveys. ) or ( impact social surveys. )))).
• Adding a wildcard symbol may retrieve word variants: (("smart skills series.") or ((("smart skills surveys.") or ("impact social surveys."))))*.