| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| takahashi et al. 2018 | 0.53 | 0.1 | 9475 | 97 | 21 |
| takahashi | 0.15 | 0.2 | 2153 | 78 | 9 |
| et | 1.48 | 0.1 | 7927 | 24 | 2 |
| al. | 1.24 | 0.6 | 3953 | 33 | 3 |
| 2018 | 1.31 | 0.1 | 7991 | 64 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| takahashi et al. 2018 | 0.51 | 0.3 | 9561 | 38 |
