Perhaps you should try some spelling variations:
"runge theorie" » "range theories"
"d'une theorie" » "eine theorie", "seine theorie", "reine theorie"
"d'un theoreme" » "du theoreme"
"runge theory" » "range theory", "regge theory", "nudge theory"

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: (((("runge theorie") OR ((("d'une theorie") OR ("d'un theoreme"))))) OR ("runge theory")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"runge theorie\") or (((\"d'une theorie\") OR (\"d'un theoreme\"))))) or (\"runge theory\"))".
• Removing quotes may allow a broader search: (((( runge theorie ) or ((( d'une theorie ) OR ( d'un theoreme ))))) or ( runge theory )).
• Adding a wildcard symbol may retrieve word variants: (((("runge theorie") or ((("d'une theorie") OR ("d'un theoreme"))))) or ("runge theory"))*.