| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| mysteries of the unknown book collection | 0.06 | 0.8 | 2796 | 15 | 40 |
| mysteries | 1.31 | 0.7 | 1593 | 19 | 9 |
| of | 1.21 | 1 | 5743 | 40 | 2 |
| the | 1.98 | 0.4 | 4656 | 96 | 3 |
| unknown | 0.41 | 0.8 | 2468 | 28 | 7 |
| book | 1.65 | 0.7 | 4316 | 1 | 4 |
| collection | 1.35 | 0.9 | 419 | 29 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| mysteries of the unknown book collection | 1.27 | 0.9 | 8215 | 37 |
