Perhaps you should try some spelling variations:
planning courses » training courses, planning uses, planning congresses
risk planning » crisis planning, cost planning, dose planning
courses wayne » courses dianne, courses jan
wang yang » wang yan, wang liang, wang yanling
long tan » hong tan, long han, long thanh
dong bin » dong sin, dong di, dann bin
e a » et a

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 yang) OR (long tan))) OR (dong bin)) e a risk planning courses wayne (jong OR pong) ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wang yang) or (long tan))) or (dong bin)) e a risk planning courses wayne (jong or pong) ;*.