Perhaps you should try some spelling variations:
rates bring » rates during, rates using, rates saving
lower cost » lower costs, power costs, low cost
bring what » doing what, brief what, going what
wang wang » wang liang, wang yan, wang yong
wang yang » wang yan, wang liang, wang yanling
oder cost » der cost, power cost, user cost

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 wang yang ((oder cost) OR (lower cost)) savings rates bring what ;~.
• Adding a wildcard symbol may retrieve word variants: wang wang yang ((oder cost) or (lower cost)) savings rates bring what ;*.