Perhaps you should try some spelling variations:
"gene regulatory relations" » "gene regulatory regions", "gene regular relations", "gene regulatory actions", "gene regulation relations"
"acute regulatory setting" » "acute ambulatory setting", "acute regulatory reporting", "acute regulatory situation", "state regulatory setting", "acute regulation setting", "acute respiratory setting"
"gene regulatory functions" » "gene regulation functions", "gene regulatory function"

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: (("acute regulatory setting") OR ((("gene regulatory relations") OR ("gene regulatory functions"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"acute regulatory setting\") or (((\"gene regulatory relations\") OR (\"gene regulatory functions\"))))*".
• Removing quotes may allow a broader search: (( acute regulatory setting ) or ((( gene regulatory relations ) OR ( gene regulatory functions ))))*.