| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| read public domain books online | 0.57 | 0.4 | 9303 | 100 |
| free public domain books online to read | 1.86 | 0.3 | 8032 | 53 |
| public domain books online free | 1.26 | 0.4 | 9517 | 67 |
| public domain books search | 1.6 | 0.6 | 6266 | 48 |
| public domain books goodreads | 0.01 | 0.2 | 6276 | 43 |
| find public domain books | 0.64 | 0.1 | 3810 | 80 |
| free books public domain | 0.81 | 0.2 | 8133 | 78 |
| public domain for books | 0.1 | 0.1 | 2226 | 5 |
| download public domain books | 1.82 | 0.7 | 370 | 14 |
| public domain book sites | 0.77 | 0.7 | 8438 | 96 |
