Perhaps you should try some spelling variations:
"runge theorie" » "range theories", "runge theory"
"d'une theorie" » "eine theorie", "d'un theoreme", "reine theorie"
"seine theorie" » "eine theorie", "einer theorie"
"range theory" » "change theory", "gauge theory", "hodge 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 ("seine theorie"))))) OR ("range theory")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"runge theorie\") or (((\"d'une theorie\") OR (\"seine theorie\"))))) or (\"range theory\"))".
• Removing quotes may allow a broader search: (((( runge theorie ) or ((( d'une theorie ) OR ( seine theorie ))))) or ( range theory )).
• Adding a wildcard symbol may retrieve word variants: (((("runge theorie") or ((("d'une theorie") OR ("seine theorie"))))) or ("range theory"))*.