Perhaps you should try some spelling variations:
dean credit » clean credit, deals credit, de credit
rating risk » ratings risk, trading risk, raising risk
liang yang » liang ying, huang yang, liang dan
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
work shiu » wong shiu, work six

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 yang) OR (yang yang))) OR (wang yang)) dean credit rating risk work shiu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((((liang yang) OR (yang yang))) or (wang yang)) dean credit rating risk work shiu ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((((liang yang) OR (yang yang))) or (wang yang)) dean credit rating risk work shiu ;*.