Perhaps you should try some spelling variations:
garche » marche, garch, garcke
demarches » demarche, searches, marches, demmarches, demarcher, demsearches
search » research
searcher » researcher, searchers, searches, searched
larches » marches, larcher, searches, larchers, larchs, lmarches, lsearches
larche » larcher, marche, larch
arches » marches, archer, searches

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: ((((garche OR demarches) OR search) OR ((larches OR larche) OR searcher)) OR arches).
• Adding a wildcard symbol may retrieve word variants: ((((garche or demarches) or search) or ((larches or larche) or searcher)) or arches)*.