Perhaps you should try some spelling variations:
investment period » investment series, investment policy, adjustment period
water investment » water investments, after investment, rates investment
poor investment » power investments, sector investment
good investment » road investment, world investment, road investments
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. net ((poor investment) OR (good investment)) demand ) or ( h. kept water investment period ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. net ((poor investment) OR (good investment)) demand ) OR ( h. kept water investment period )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. net ((poor investment) OR (good investment)) demand ) or ( h. kept water investment period ))".
• Adding a wildcard symbol may retrieve word variants: (( h. net ((poor investment) OR (good investment)) demand ) or ( h. kept water investment period ))*.