Perhaps you should try some spelling variations:
taking courses » training courses
risk taking » risk sharing
courses jan » course can, courses a, courses wayne
wang yang » wang yan, wang liang, wang yanling
jan jong » nam jong
dong di » dong sin
ya a » a a, y a, ye a
hong » long

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((wang yang) or (hong tan))) or (dong di)) ya a risk taking courses jan jong ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wang yang) OR (hong tan))) OR (dong di)) ya a risk taking courses jan jong ;.
• Adding a wildcard symbol may retrieve word variants: ((((wang yang) or (hong tan))) or (dong di)) ya a risk taking courses jan jong ;*.