Perhaps you should try some spelling variations:
investment period » investment series, investment policy, adjustment period
bank investor » bank investors, bond investor, bank inspector
east private » cost private, das private, costs private
west private » cost private, net private, costs private
kept bank » west bank, pt bank, debt bank

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: (( h. ((east private) OR (west private)) investment period ) OR ( h. kept bank investor demand ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. ((east private) OR (west private)) investment period ) or ( h. kept bank investor demand ))~".
• Adding a wildcard symbol may retrieve word variants: (( h. ((east private) OR (west private)) investment period ) or ( h. kept bank investor demand ))*.