| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| famous well known historical mysteries | 1.12 | 0.5 | 9131 | 48 | 38 |
| famous | 1.99 | 0.2 | 3838 | 25 | 6 |
| well | 1.81 | 0.4 | 6597 | 74 | 4 |
| known | 0.3 | 0.4 | 2594 | 87 | 5 |
| historical | 0.81 | 0.4 | 2815 | 55 | 10 |
| mysteries | 0.95 | 0.6 | 425 | 43 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| famous well known historical mysteries | 0.25 | 0.3 | 4083 | 11 |
| list of historical mysteries | 0.48 | 0.5 | 8104 | 32 |
| greatest mysteries in history | 1.95 | 0.2 | 7154 | 88 |
| history s greatest mysteries | 1.84 | 0.6 | 562 | 50 |
| greatest mysteries in american history | 0.48 | 0.7 | 234 | 52 |
| best historical murder mysteries | 0.28 | 0.1 | 4777 | 24 |
| greatest mysteries of all time | 1.59 | 0.2 | 7731 | 66 |
| history's greatest mysteries wiki | 0.33 | 0.2 | 2132 | 81 |
| history's greatest mysteries wikipedia | 1.84 | 1 | 7381 | 63 |
| ancient history greatest mysteries | 1.49 | 0.3 | 121 | 3 |
| top mysteries of all time | 0.61 | 0.6 | 973 | 9 |
| the 50 best mysteries of all time | 0.7 | 0.4 | 8001 | 2 |
| best mysteries of all time | 1.57 | 0.2 | 3481 | 32 |
| the biggest mysteries in history | 1.24 | 0.2 | 4880 | 72 |
| best historical mystery books | 1.48 | 0.7 | 1708 | 61 |
| top 100 mysteries of all time | 0.29 | 0.7 | 3830 | 94 |
| top 10 biggest mysteries | 1.55 | 0.1 | 1089 | 20 |
