Perhaps you should try some spelling variations:
"gene regulation relations" » "gene regulation relation", "gene regulation regulation", "gene simulation relations"
"gene regulatory relations" » "gene regulatory regions", "gene regular relations", "gene regulatory functions"
"state regulatory setting" » "state ambulatory setting", "state regulatory reporting", "state regulatory situation", "state regulation setting", "cycle regulatory setting"

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: (((("gene regulatory relations") OR ("gene regulation relations"))) OR ("state regulatory setting")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"gene regulatory relations\") OR (\"gene regulation relations\"))) or (\"state regulatory setting\"))".
• Removing quotes may allow a broader search: (((( gene regulatory relations ) OR ( gene regulation relations ))) or ( state regulatory setting )).
• Adding a wildcard symbol may retrieve word variants: (((("gene regulatory relations") OR ("gene regulation relations"))) or ("state regulatory setting"))*.