Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
und losung » und losungen, und auflosung
yan congo » yan cong
congo can » congo call, cong van, congo a
can cost » can costa, can lost, can post
und long » und lohne, und lohn, und lock
wang » wing, lang

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: (wang OR wan) yan congo can cost sharing ((und long) OR (und losung)) ago ;~.
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yan congo can cost sharing ((und long) or (und losung)) ago ;*.