Perhaps you should try some spelling variations:
planning course » training course, planning case, planning your
risk planning » crisis planning, cost planning, dose planning
zhong tai » hong tan, hong hai, zhong zhi
wing yan » wang yan, wing ian, wing tan
dong bin » dong sin, dong di, dann bin
ya a » a a, y a, ye a

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wing yan) or (dong bin)) ya a risk planning course zhong tai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wing yan) OR (dong bin)) ya a risk planning course zhong tai ;*.