Perhaps you should try some spelling variations:
savings using » mappings using, settings using, things using
net savings » cost savings, term savings, fuel savings
yang liang » wang liang, yan liang, yang yang
wang yang » wang yan, wang liang, wang yanling
liang bin » liang ying, huang bin, liang dan
wang wei » zhang wei, wang zhi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang liang bin net savings using ((dong sin) or (wang wei)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang liang bin net savings using ((dong sin) OR (wang wei)) ;*.