Perhaps you should try some spelling variations:
wang luhang » wang liang, wang lihong, wang yuhan
luhang yang » huang yang, guifang yang
cos savings » cost savings, costs savings, its savings
cost saving » cost savings, costs savings, cost sharing
yang yi » yang di, yang xi, yang jui
group a » group _
group 2 » group _

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 luhang yang yi ((cos savings) OR (cost saving)) ((group a) OR (group 2)) shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang luhang yang yi ((cos savings) OR (cost saving)) ((group a) or (group 2)) shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang luhang yang yi ((cos savings) OR (cost saving)) ((group a) or (group 2)) shu ;*.