When searching with more than one parameter in devicesearch.get returned count is 0

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Error:
print(json.dumps(client.devicesearch.get(Type="Laptop",mac="xx:xx:xx:xx:xx:xx")))
returns: {"totalCount": 0, "devices": []}

Expected behaviour:
Should print the device which matches with Type = Laptop and mac= xx:xx:xx:xx:xx

When using just the type or just the mac the return is expected.

{"totalCount": 1, "devices": [{"did": X, "macaddress": "X", "vendor": "X", "ip": "X", "sid": 25, "hostname": "X", "firstSeen": X, "lastSeen": X, "os": "X", "typename": "laptop", "typelabel": "Laptop", "credentials": X, "tags": [....]}

But both parameter together doesnt work at all.