# Will find things like "Art Council", "Artists Ltd", ...
Client.objects.filter(name__istartswith="art")

# ...but won't find "The Art Council", "United Artists", ...
# This will:
Client.objects.filter(name__icontains="art")

# ...but will find things like "Lartistic plc", "Bart Simpson" 
# which is not suitable for, say, an autocomplete feature

# Use this instead:
Client.objects.filter(name__iregex=r"(^|'| )art+")
# Will find things like "The Artists", "Art Uni", "Le d'Artis" but not "Bart"