Perhaps you should try some spelling variations:
investment period » investment policy, adjustment period, investment operations
investment series » investment services, investment barriers, investment treaties
safer investment » safer investments, safe investment, after investment
water investment » water investments, after investment, rates investment
kept water » melt water, ment water, peat water

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. kept safer investment series ) or ( h. kept water investment period ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. kept safer investment series ) OR ( h. kept water investment period ))*.