http failure response 0 unknown error

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
http failure response 0 unknown error	1.89	0.5	6059	84	37
http	0.4	0.8	4054	100	4
failure	1.95	1	1438	97	7
response	1.31	0.6	942	61	8
unknown	1.84	0.4	1113	90	7
error	1.28	0.7	2530	17	5

Keyword	CPC	PCC	Volume	Score
http failure response 0 unknown error	1.47	0.5	287	40
http failure response for : 0 unknown error	0.76	0.7	280	30
error http response code failure	1.51	0.2	908	13
http 0 unknown error	1.61	0.3	966	77
http error unknown error	0.76	0.4	7584	14
unknown error http code	0.62	0.2	3544	92
network error http response	1.62	0.7	4741	12
err http response code failure	1.56	1	4297	64
http response code failure	0.4	0.6	3323	76
non http response message failed to respond	1.49	0.7	160	42
http failure response for https	0.31	0.8	4096	83
error: unsuccessful http response	1.23	0.9	7950	9
what does http failure response mean	1.4	0.6	6752	55
http failed to respond	1.58	0.4	8699	80
responseerror: http error	0.35	0.7	3014	4
request fail http status error	1.27	0.3	701	25