Perhaps you should try some spelling variations:
investment period » investment series, investment policy, adjustment period
investment demand » investor demand
trade investment » private investment, estate investment, trade adjustment
kent trade » net trade, best trade, nest trade
kent net » kent cem, kent n

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. ((kent net) OR (kent e)) investment demand ) OR ( h. kent trade investment period ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. ((kent net) OR (kent e)) investment demand ) or ( h. kent trade investment period ))~".
• Adding a wildcard symbol may retrieve word variants: (( h. ((kent net) OR (kent e)) investment demand ) or ( h. kent trade investment period ))*.