Perhaps you should try some spelling variations:
postal ratings » postal savings, postal saving, postal rates
ratings risk » patients risk
taking up » making up, waking up, shaking up
risk cong » risk coping, risk among, risk along
tying up » tying _
yang jui » yang judy, yang di, yang xi
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan ((((tying up) or (taking up))) or (yang jui)) postal ratings risk cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((((tying up) OR (taking up))) OR (yang jui)) postal ratings risk cong shu ;.
• Adding a wildcard symbol may retrieve word variants: wang yan ((((tying up) or (taking up))) or (yang jui)) postal ratings risk cong shu ;*.