diff --git a/search_engines/config.py b/search_engines/config.py
index 97f69d1..19a99a4 100644
--- a/search_engines/config.py
+++ b/search_engines/config.py
@@ -18,6 +18,7 @@
 FAKE_USER_AGENT = 'Mozilla/5.0 (Windows NT 6.1; rv:84.0) Gecko/20100101 Firefox/84.0'
 
 ## Proxy server 
+# Example: PROXY = "1.1.1.3:8080,http://1.2.3.4:8080"
 PROXY = None
 
 ## TOR proxy server 
diff --git a/search_engines/engine.py b/search_engines/engine.py
index 769306f..f54c40f 100644
--- a/search_engines/engine.py
+++ b/search_engines/engine.py
@@ -165,7 +165,9 @@ def search(self, query, pages=cfg.SEARCH_ENGINE_RESULTS_PAGES):
             try:
                 response = self._get_page(request['url'], request['data'])
                 if not self._is_ok(response):
-                    break
+                    msg = f"google status not ok: {response.http}"
+                    raise Exception(msg)
+
                 tags = BeautifulSoup(response.html, "html.parser")
                 items = self._filter_results(tags)
                 self._collect_results(items)
diff --git a/search_engines/http_client.py b/search_engines/http_client.py
index 61244ba..effe141 100644
--- a/search_engines/http_client.py
+++ b/search_engines/http_client.py
@@ -1,4 +1,5 @@
 import requests
+import random
 from collections import namedtuple
 
 from .config import TIMEOUT, PROXY, USER_AGENT
@@ -45,6 +46,9 @@ def _quote(self, url):
     def _set_proxy(self, proxy):
         '''Returns HTTP or SOCKS proxies dictionary.'''
         if proxy:
+            if "," in proxy:
+                proxys = [x if utl.is_url(x) else f"http://{x}"  for x in proxy.split(",") if x]
+                proxy = random.choice(proxys)
             if not utl.is_url(proxy):
                 raise ValueError('Invalid proxy format!')
             proxy = {'http':proxy, 'https':proxy}