Perhaps you should try some spelling variations:
investment period » investment series, investment policy, adjustment period
notes investment » does investment, forest investment, models investment
rates investment » rules investment, water investment, related investment
kent notes » agent notes, end notes, text notes
kent rates » heat rates, ascent rates, events rates

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 notes investment period ) OR ( h. kent rates investment barriers ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. kent notes investment period ) or ( h. kent rates investment barriers ))*.