when did the ussr invade czechoslovakia

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did the ussr invade czechoslovakia	0.39	0.8	7676	28	39
when	0.32	0.9	5431	55	4
did	0.98	1	6495	49	3
the	1.39	0.1	144	24	3
ussr	1.21	0.7	7703	62	4
invade	0.95	0.1	5809	81	6
czechoslovakia	1.68	0.5	4059	47	14

Keyword	CPC	PCC	Volume	Score
when did the ussr invade czechoslovakia	1.87	1	5041	68
why did the ussr invade czechoslovakia	0.08	0.5	1848	21
when did the nazis invade czechoslovakia	1.46	0.1	2246	28
when did the invasion of czechoslovakia start	0.76	0.4	8313	57
the soviet invasion of czechoslovakia	1.98	0.3	3038	83
the soviet union invasion of czechoslovakia	0.78	0.4	5362	89
why did soviet union invade czechoslovakia	1.72	0.8	7405	10
when was the invasion of czechoslovakia	0.4	0.7	3000	82
ussr invades czechoslovakia 1968	1.5	0.5	9250	27
when was the invasion of czechoslovakia ww2	1.5	0.7	8165	5
when was czechoslovakia invaded	0.86	0.5	8930	43
when was czechoslovakia invaded ww2	0.09	1	6943	54
russia invasion of czechoslovakia	0.83	0.9	8373	48
russian invasion of czechoslovakia	0.06	1	2057	21
czech invasion by soviet union	1.32	0.5	119	75