SearchAPIRequest for raw_name is not working

[linuxchip]

I am always getting response as empty

Below is the code for reference

from piplapis.search import SearchAPIRequest
from piplapis.data import Person, Name, Address, Job
from piplapis.search import SearchAPIError

request = SearchAPIRequest(raw_name=u'Bill Gates', api_key='zzzzz') // Not working

OR

request = SearchAPIRequest(first_name=u'Bill', last_name=u'Gates', api_key='ZZZZ') // Not working

try:
response = request.send()
except SearchAPIError as e:
print e.http_status_code, e

print(response.name)
print(response.gender)
print(response.education)
print(response.username)
print(response.address)

Anything wrong ?