Perhaps you should try some spelling variations:
investment choices » investment costs, investment process
investment period » investment series, investment policy, investment demand
scale investment » estate investment, trade investment, estate investments
water investment » water investments, rates investment, greater investment
kent scale » likert scale

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 scale investment period ) OR ( h. kenya water investment choices ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. kent scale investment period ) or ( h. kenya water investment choices ))*.