Perhaps you should try some spelling variations:
training course » training courses
training risk » trading risk, training crisis, defining risk
wang liang » wang yang
liang so » liang sun, liang _, liang li
so rural » do rural, faso rural, two rural
wong siu » wong shiu, kong siu, wong sau

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 so rural credit ((training risk) or (training course)) wong siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang so rural credit ((training risk) OR (training course)) wong siu ;.
• Adding a wildcard symbol may retrieve word variants: wang liang so rural credit ((training risk) or (training course)) wong siu ;*.