Perhaps you should try some spelling variations:
taking courses » training courses
risk taking » risk sharing
courses nam » courses a, courses jan, courses back
wang yang » wang yan, wang liang, wang yanling
long tan » hong tan, long han, long thanh
nam jong » kim jong
dong di » dong sin
ya a » a a, ye a, yu a
y a » y la

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 (long tan))) or (dong di)) ((ya a) or (y a)) risk taking courses nam jong ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wang yang) OR (long tan))) OR (dong di)) ((ya a) OR (y a)) risk taking courses nam jong ;.
• Adding a wildcard symbol may retrieve word variants: ((((wang yang) or (long tan))) or (dong di)) ((ya a) or (y a)) risk taking courses nam jong ;*.