Perhaps you should try some spelling variations:
savings cross » savings groups, savings access, savings group
power cost » power costs, power costa, lower cost
along what » along who, wrong what
wang yang » wang yan, wang liang, wang yanling
oder cost » der cost, lower cost, user cost
yang jin » yang jie, yang jun, ying jin

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 yang jin ((oder cost) OR (power cost)) savings cross ((along what) OR (log what)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang jin ((oder cost) OR (power cost)) savings cross ((along what) or (log what)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang jin ((oder cost) OR (power cost)) savings cross ((along what) or (log what)) ;*.