Perhaps you should try some spelling variations:
damping factors » driving factors, acting factors, making factors
risk damping » risk mapping, drift damping, risk taking
factors kong » factors box, factors can
kong siu » kong eiu, wong siu, dong sin
ka a » kai a, a a, k a
wang » wing, wan, lang

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 yan) OR (dof skin)) ka a risk damping factors kong siu ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (dof skin)) ka a risk damping factors kong siu ;*.