Perhaps you should try some spelling variations:
rates among » deaths among
wang liang » wang yang
liang ying » liang liying, huang ying, zhang ying
ying chang » jin chang, yi chang, yin hang
chang cost » change cost, chain cost, changing cost
rate along » data along, bats along, game along

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang liang ying chang cost savings ((rate along) OR (rates among)) who ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang ying chang cost savings ((rate along) OR (rates among)) who ;".
• Adding a wildcard symbol may retrieve word variants: wang liang ying chang cost savings ((rate along) OR (rates among)) who ;*.