Perhaps you should try some spelling variations:
"right-wing extremist" » "right-wing extremists"
"right-wing extremes" » "right-wind extremes", "right-ein extremes", "right-wing extremists"
"right-wing extremism" » "right-wing extremity"

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("right-wing extremism") OR ("right-wing extremes"))) OR ("right-wing extremist")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"right-wing extremism\") OR (\"right-wing extremes\"))) or (\"right-wing extremist\"))".
• Removing quotes may allow a broader search: (((( right-wing extremism ) OR ( right-wing extremes ))) or ( right-wing extremist )).
• Adding a wildcard symbol may retrieve word variants: (((("right-wing extremism") OR ("right-wing extremes"))) or ("right-wing extremist"))*.