| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| pdf search engine free textbooks | 1.03 | 0.5 | 6539 | 41 |
| free college textbooks pdf search engine | 1.98 | 0.4 | 1737 | 93 |
| pdf book search engine | 0.68 | 0.4 | 177 | 77 |
| free pdf search engine | 1.25 | 0.2 | 8625 | 16 |
| pdf search engine free download | 1.96 | 0.2 | 6093 | 82 |
| free full pdf search engine | 0.15 | 0.7 | 4410 | 48 |
| free textbook search engine | 1.78 | 0.6 | 6689 | 55 |
| search pdf search engine | 0.78 | 0.2 | 7866 | 83 |
| best search engine for pdf books | 1.24 | 0.8 | 3626 | 48 |
| pdf search engine pdf drive | 1.65 | 0.3 | 8480 | 37 |
| pdf file search engine | 0.84 | 0.6 | 1784 | 51 |
| search engine for pdf files | 1.72 | 0.4 | 9795 | 96 |
| best pdf search engine | 1.21 | 0.7 | 9089 | 77 |
| search engine pdf doc | 1.16 | 0.1 | 9078 | 45 |
| textbook pdf search engine reddit | 0.07 | 0.6 | 1723 | 72 |
| free textbook pdf search | 0.02 | 0.1 | 6980 | 93 |
| pdf search engine drive | 0.37 | 0.6 | 5744 | 45 |
| free book search engine | 0.42 | 0.8 | 7061 | 51 |
