Perhaps you should try some spelling variations:
related investment » private investment, estate investment, road investment
investment period » investment series, investment policy, adjustment period
investment flows » investment funds
bond investment » bond investments, road investment, fund investment
heat related » health related, event related, heat rate

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. agent bond investment period ) OR ( h. heat related investment flows ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. agent bond investment period ) or ( h. heat related investment flows ))*.