Perhaps you should try some spelling variations:
investments activities » investment activities, investment activity, investments securities
sector investments » sector investment
investment period » investment series, investment policy, adjustment period
do investment » d investment, does investment, wto investment
data sector » data section, dark sector, data factor
deep do » deep down, deep box

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. deep do investment period ) OR ( h. data sector investments activities ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. deep do investment period ) or ( h. data sector investments activities ))*.