| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| tetrahedron lett. 1964 | 0.08 | 0.4 | 4871 | 98 | 22 |
| tetrahedron | 1.36 | 0.1 | 883 | 32 | 11 |
| lett. | 0.16 | 0.5 | 2598 | 54 | 5 |
| 1964 | 0.33 | 0.4 | 7111 | 35 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| tetrahedron lett. 1964 | 1.91 | 0.4 | 5107 | 77 |
| tetrahedron lett. 1963 19 | 0.13 | 0.5 | 5145 | 48 |
| tetrahedron lett. 1969 10 2505 | 0.78 | 0.6 | 478 | 86 |
| tetrahedron lett. 1969 1943 | 1.49 | 0.2 | 4918 | 22 |
| tetrahedron lett. 1967 8 743 | 1.27 | 0.2 | 5680 | 33 |
| tetrahedron lett. 1967 8 1119 | 1.37 | 0.2 | 935 | 96 |
| tetrahedron lett. 1967 34 3327 | 0.26 | 1 | 9534 | 12 |
| tetrahedron lett. 1994 35 669 | 1.42 | 0.8 | 1264 | 84 |
| tetrahedron lett. 1994 35 6631 | 1.83 | 0.8 | 4642 | 56 |
| tetrahedron lett. 1994 35 5981 | 0.22 | 1 | 2606 | 26 |
| tetrahedron lett. 1984 25 2183 | 1.71 | 0.2 | 4503 | 36 |
| tetrahedron lett. 1984 25 2195 | 1.44 | 0.3 | 6226 | 74 |
| tetrahedron lett. 1974 3387 | 0.62 | 0.2 | 715 | 48 |
