Perhaps you should try some spelling variations:
"psychologist" » "psychology", "sociologist"
"psychologists" » "psychologys", "sociologists"
"psychologie" » "psychology", "psychologiques"
"psychologies" » "psychologys", "psychologiquess", "psychologiques", "psychology", "pathologies"
"psychological" » "physiological"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("psychologist" or "psychologie") or ("psychological" or ("psychologies" OR "psychologists")))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("psychologist" OR "psychologie") OR ("psychological" OR ("psychologies" OR "psychologists"))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"psychologist\" or \"psychologie\") or (\"psychological\" or (\"psychologies\" OR \"psychologists\")))".
• Removing quotes may allow a broader search: (( psychologist or psychologie ) or ( psychological or ( psychologies OR psychologists ))).
• Adding a wildcard symbol may retrieve word variants: (("psychologist" or "psychologie") or ("psychological" or ("psychologies" OR "psychologists")))*.