Perhaps you should try some spelling variations:
investment period » investment policy, investment demand, adjustment period
investment series » investment services, investment barriers, investment treaties
safer investment » safer investments, water investment, water investments
total investment » social investment, global investment, rural investment
kept » dept

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. (kent OR kept) safer investment period ) or ( h. (kent OR kept) total investment series ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. (kent OR kept) safer investment period ) OR ( h. (kent OR kept) total investment series )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. (kent OR kept) safer investment period ) or ( h. (kent OR kept) total investment series ))".
• Adding a wildcard symbol may retrieve word variants: (( h. (kent OR kept) safer investment period ) or ( h. (kent OR kept) total investment series ))*.