Perhaps you should try some spelling variations:
rate changes » price changes
liang ying » liang liying, huang ying, zhang ying
using rate » using state, using gated, using nitrate
changes im » changes i, changes ii, changes big
li xiang » li qiang, li xiane, li xiande
a using » 7a using, 2 using, 3 using
cio a » cio _, ceo a, cfo a

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 ((liang ying) OR (((lian xiang) OR (li xiang)))) cio a using rate changes im ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang ying) or (((lian xiang) OR (li xiang)))) cio a using rate changes im ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang ying) or (((lian xiang) OR (li xiang)))) cio a using rate changes im ;*.