Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
sharing tan » sharing tags, sharing a, sharing bad
wang yong » wang yang, wang yan, wang shiyong
can cost » can costa, can lost, can post
tan yong » tan hong, tan kong, tan yang
yong seo » hong seo, kong sek, song so

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 yong) OR (wang hyoung)) can cost sharing tan yong seo ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((wang yong) or (wang hyoung)) can cost sharing tan yong seo ;*.