Perhaps you should try some spelling variations:
skills surveys » skills survey
social surveys » topical surveys
skills series » skills service, skills studies, skills survey
motor skills » labor skills
smart skills » soft skills, what skills
smart social » small social, art social, sport social

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( motor skills series. ) or ((( smart skills surveys. ) or ( smart social surveys. ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( motor skills series. ) OR ((( smart skills surveys. ) OR ( smart social surveys. )))).
• Adding a wildcard symbol may retrieve word variants: (( motor skills series. ) or ((( smart skills surveys. ) or ( smart social surveys. ))))*.