Perhaps you should try some spelling variations:
investments series » investment series, investment services, investment period
social investments » social investment, local investment, capital investments
scale investments » scale investment, estate investments, sector investments
reported social » related social
kept scale » likert scale

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

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