Perhaps you should try some spelling variations:
planning cost » planning case
risk planning » crisis planning, cost planning, dose planning
zhong tai » hong tan, hong hai, zhong zhi
wing yan » wing ian, wing tan, wang yang
dong di » dong sin
me a » m a, me _, e a
u a » up a, eu a, uk 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: ((((wing yan) OR (wang yan))) OR (dong di)) ((u a) OR (me a)) risk planning cost zhong tai ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wing yan) or (wang yan))) or (dong di)) ((u a) or (me a)) risk planning cost zhong tai ;*.