Perhaps you should try some spelling variations:
"normal variations" » "normal variants"
"local variations" » "level variations", "lexical variation"
"local variables" » "real variables"

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: (((("local variations") OR ("local variables"))) OR ("normal variations")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"local variations\") OR (\"local variables\"))) or (\"normal variations\"))".
• Removing quotes may allow a broader search: (((( local variations ) OR ( local variables ))) or ( normal variations )).
• Adding a wildcard symbol may retrieve word variants: (((("local variations") OR ("local variables"))) or ("normal variations"))*.