Perhaps you should try some spelling variations:
searches » search, searcher
demarches » demarche, demarcher
semarches » demarche, starches, semarcher
supermarches » supermarktes, supermatrices, supermarket, supermarcher
searched » researched, search
marches » marcher
arches » archer

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: ((((marches OR searches) OR (demarches OR (semarches OR supermarches))) OR (marche OR searched)) OR arches).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((marches or searches) or (demarches or (semarches OR supermarches))) or (marche or searched)) or arches)".
• Adding a wildcard symbol may retrieve word variants: ((((marches or searches) or (demarches or (semarches OR supermarches))) or (marche or searched)) or arches)*.