Keyword Analysis & Research: list the names of 4 types of search engines

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
list the names of 4 types of search engines	0.03	0.6	2049	8	43
list	0.9	0.2	2914	88	4
the	0.92	0.3	5006	75	3
names	0.32	0.5	4224	13	5
of	0.67	0.6	284	61	2
4	0.68	0.4	4745	84	1
types	1.39	0.2	3750	98	5
of	1.48	0.2	3582	28	2
search	1.61	1	7448	23	6
engines	1.46	0.4	1856	23	7

Keyword	CPC	PCC	Volume	Score
list the names of 4 types of search engines	0.94	0.5	9705	74