Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
wing yan » wang yan, wing ian, wing tan
hua cost » a cost, eu cost, run cost
oil ying » oil using
oil line » rail line
yan yi » yang yi, tan yi, yan zi
yi hua » li hua, ya hua, yi hui

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan yi hua cost sharing ((oil ying) OR (oil line)) shu ;~".
• Adding a wildcard symbol may retrieve word variants: wing yan yi hua cost sharing ((oil ying) OR (oil line)) shu ;*.