Perhaps you should try some spelling variations:
investment period » investment series, investment policy, investment demand
safer investment » safer investments, water investment, water investments
scale investment » estate investment, trade investment, estate investments
investment ties » investment does, investment series, investment trends
kent scale » likert scale

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 safer investment ties ) or ( h. kent scale investment period ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. kent safer investment ties ) OR ( h. kent scale investment period )).
• Adding a wildcard symbol may retrieve word variants: (( h. kent safer investment ties ) or ( h. kent scale investment period ))*.