Perhaps you should try some spelling variations:
sector investments » sector investment
investments period » investment period, investment periods, investments peru
payment service » payment services, employment service
report based » report card
kept based » depth based, text based, set based

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. meat sector investments period ) OR ( h. ((kept based) OR (report based)) payment service ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. meat sector investments period ) or ( h. ((kept based) OR (report based)) payment service ))~".
• Adding a wildcard symbol may retrieve word variants: (( h. meat sector investments period ) or ( h. ((kept based) OR (report based)) payment service ))*.