Perhaps you should try some spelling variations:
"vieweg studium; grundkurs mathematik" » "vieweg studium; grundkurs informatik"
"reviewed studies; grundkurs mathematik" » "reviewed studies; grundkurs informatik", "review studies; grundkurs mathematik", "related studies; grundkurs mathematik", "resolved studies; grundkurs mathematik"

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: (((("vieweg studium; grundkurs mathematik") OR ("vieweg studium; bruckenkurs mathematik"))) OR ((("viewed studium; vorkurs mathematik") OR ("reviewed studies; grundkurs mathematik")))).
• Removing quotes may allow a broader search: (((( vieweg studium; grundkurs mathematik ) or ( vieweg studium; bruckenkurs mathematik ))) or ((( viewed studium; vorkurs mathematik ) or ( reviewed studies; grundkurs mathematik )))).
• Adding a wildcard symbol may retrieve word variants: (((("vieweg studium; grundkurs mathematik") or ("vieweg studium; bruckenkurs mathematik"))) or ((("viewed studium; vorkurs mathematik") or ("reviewed studies; grundkurs mathematik"))))*.