Keyword Analysis & Research: can i combine pdfs into one document

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
can i combine pdfs into one document	0.74	0.4	4074	50	36
can	1.86	0.4	5898	21	3
i	0.95	0.7	2529	73	1
combine	1	0.3	8268	69	7
pdfs	1.03	1	8244	7	4
into	0.72	0.9	1079	100	4
one	0.89	0.9	8137	78	3
document	1.16	0.9	8259	84	8

Keyword	CPC	PCC	Volume	Score
can i combine pdfs into one document	0.23	0.1	9139	52