Perhaps you should try some spelling variations:
investment strategies » investment strategy, development strategies, investment rates
social investments » social investment, local investment, capital investments
investments series » investment series, investment services, investment period
trade investment » private investment, estate investment, trade adjustment
likert social » likert scale
likert trade » likert scale, latent trade

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

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