Perhaps you should try some spelling variations:
planning congresses » farming congresses
congresses zhong » congresses china, congresses penang, congresses zu
risk planning » crisis planning, cost planning, dose planning
zhong zhi » zhang zhi, hong ghi, zhong tai
wan yan » wang yan, nan yan, wai yan
y la » a la, _ la

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: ((wan yan) OR (dong sin)) ((y a) OR (y la)) risk planning congresses zhong zhi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wan yan) or (dong sin)) ((y a) OR (y la)) risk planning congresses zhong zhi ;~".
• Adding a wildcard symbol may retrieve word variants: ((wan yan) or (dong sin)) ((y a) OR (y la)) risk planning congresses zhong zhi ;*.