Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
rail line » rail lines, railway line
wing yan » wang yan, wing ian, wing tan
hua cost » a cost, eu cost, run cost
oil ying » oil using, oil 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan yi hua cost sharing ((oil ying) OR (rail line)) shu ;~.
• Adding a wildcard symbol may retrieve word variants: wing yan yi hua cost sharing ((oil ying) or (rail line)) shu ;*.