| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| yoshikawa et al. 2013 | 0.14 | 1 | 7379 | 17 | 21 |
| yoshikawa | 1.37 | 0.6 | 1327 | 14 | 9 |
| et | 1.53 | 0.1 | 3463 | 89 | 2 |
| al. | 1.01 | 0.5 | 8220 | 73 | 3 |
| 2013 | 1.98 | 0.4 | 2906 | 10 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| yoshikawa et al. 2013 | 0.82 | 0.9 | 9396 | 20 |
