Perhaps you should try some spelling variations:
development strategies » development strategy
states investments » estate investments, taxes investments, systems investments
investments demand » investment demand, investment demands, investments germany
gross development » cross development, grips development, grown development
heat gross » real gross, heat loss

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. heat gross development strategies ) or ( h. mental states investments demand ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. heat gross development strategies ) OR ( h. mental states investments demand )).
• Adding a wildcard symbol may retrieve word variants: (( h. heat gross development strategies ) or ( h. mental states investments demand ))*.