Perhaps you should try some spelling variations:
"h. likert social investments series" » "h. likert social investment series", "h. likert local investment series", "h. likert capital investments series", "h. likert social investment services", "h. likert social investment period", "h. likert scale investments series"
"h. likert trade investment activities" » "h. likert private investment activities", "h. likert estate investment activities", "h. likert trade adjustment activities", "h. likert scale investment activities", "h. latent trade investment activities"

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 activities"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("h. likert social investments series") OR ("h. likert trade investment activities")).
• Removing quotes may allow a broader search: (( h. likert social investments series ) or ( h. likert trade investment activities )).
• Adding a wildcard symbol may retrieve word variants: (("h. likert social investments series") or ("h. likert trade investment activities"))*.