| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| books on ufos and aliens | 1.93 | 0.4 | 8730 | 85 |
| new books on ufos and aliens | 1.44 | 0.1 | 4426 | 34 |
| books about aliens and ufos for adults | 0.94 | 0.6 | 6143 | 26 |
| amazon books about aliens inside ufos | 1.59 | 0.8 | 8632 | 82 |
| free books on ufos and aliens | 1.39 | 1 | 4463 | 20 |
| new books on ufos | 0.05 | 0.1 | 4106 | 24 |
| best recent books on ufos | 0.75 | 1 | 5176 | 81 |
| documentaries on aliens and ufos | 1.99 | 1 | 6671 | 49 |
| about aliens and ufos | 0.72 | 0.4 | 2728 | 83 |
| essay on ufos and aliens | 0.64 | 0.7 | 2331 | 22 |
| latest book on ufos | 0.42 | 0.6 | 1627 | 7 |
| aliens and ufos documentaries free | 0.42 | 0.4 | 2027 | 78 |
| information about aliens and ufos | 1.35 | 0.7 | 4253 | 91 |
| movies about ufos and aliens | 1.88 | 0.6 | 118 | 76 |
| history of aliens and ufos | 1.18 | 0.5 | 1104 | 56 |
| ufos in art books | 1.3 | 0.6 | 6248 | 76 |
| books on ufo sightings | 0.36 | 0.8 | 798 | 13 |
| ufo books for kids | 0.88 | 1 | 2208 | 78 |
