using system.linq not working

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
using system.linq not working	0.59	0.4	8592	65	29
using	0.93	0.2	3500	26	5
system.linq	1.49	0.6	4011	15	11
not	0.51	0.8	8303	41	3
working	0.79	0.4	39	30	7

Keyword	CPC	PCC	Volume	Score
using system.linq	0.58	0.8	7494	19
using system.linq not found	0.29	0.9	4708	97
linq include not working	1.76	0.2	4721	11
linq does not contain	1.88	0.8	1600	96
using system.data.linq	0.83	0.4	4568	98
system.linq dll	1.34	0.8	2381	68
linq query not in	1.19	0.7	717	74
using system.linq.expressions	1.2	0.2	7435	16
how does the linq system work	0.46	1	9737	90
linq how it works	1.95	0.2	3202	19
does linq supports debugging	1.53	0.3	8224	2
linq with no lock	0.66	0.3	118	66
linq query can work with	0.92	0.8	3175	56
using system.linq in c#	1.85	0.8	4749	68
using system.linq.dynamic.core	1.26	0.8	1467	91
using system.linq para que sirve	0.53	0.8	9213	62
using system.linq meaning	1.05	0.9	1108	35
using system.linq in c# means	1.38	0.5	5195	96
using system.linq in powershell	0.51	1	3821	77
using system.linq using system.text	0.41	0.7	9425	96
what is using system.linq in c#	1.93	0.9	6517	95
system.xml.linq not found	0.89	0.1	7209	28
linq lost and found	1.57	0.1	9803	24
linq where not in	1.54	0.5	7266	55
linq to sql classes not found	1.35	0.7	5648	25
linux system not found	1.93	0.6	9265	56
c# linq not exists	0.1	0.7	3326	62