| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| how many helicopters crashed in vietnam | 0.71 | 0.8 | 3381 | 41 | 39 |
| how | 0.29 | 0.1 | 3060 | 89 | 3 |
| many | 1.66 | 0.3 | 7548 | 37 | 4 |
| helicopters | 1.38 | 0.8 | 5127 | 58 | 11 |
| crashed | 1.88 | 0.3 | 8069 | 94 | 7 |
| in | 1.67 | 0.3 | 6183 | 96 | 2 |
| vietnam | 1.64 | 0.5 | 8537 | 47 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how many helicopters crashed in vietnam | 1.76 | 0.4 | 8813 | 90 |
| how many helicopters lost in vietnam | 0.9 | 0.5 | 4153 | 78 |
| number of helicopters lost in vietnam | 0.66 | 0.8 | 1313 | 81 |
| how many helicopter pilots died in vietnam | 1.98 | 0.2 | 3258 | 99 |
| helicopter crashes in vietnam war | 1.44 | 0.7 | 8963 | 67 |
| how many helicopters were used in vietnam | 1.51 | 0.1 | 6661 | 61 |
| number of helicopter pilots killed in vietnam | 1.99 | 0.4 | 2613 | 52 |
| helicopter losses in vietnam war | 1.11 | 0.5 | 4752 | 51 |
| vietnam helicopter crashes by date | 0.57 | 0.8 | 8396 | 97 |
| helicopters lost in vietnam war | 1.42 | 1 | 8322 | 56 |
| attack helicopters in vietnam | 1.97 | 0.2 | 3620 | 33 |
| worst helicopter crashes vietnam | 0.18 | 0.8 | 1193 | 76 |
| how many helicopter pilots served in vietnam | 0.39 | 0.3 | 5620 | 54 |
| vietnam war attack helicopters | 1.18 | 0.1 | 112 | 37 |
| helicopters in vietnam war | 1.57 | 0.8 | 5612 | 72 |
| list of helicopter pilots killed in vietnam | 0.91 | 0.2 | 3081 | 33 |
| helicopter war in vietnam | 1.84 | 0.8 | 6025 | 39 |
| helicopter pilots killed in vietnam | 1.78 | 0.9 | 7355 | 55 |
| vietnam army helicopter pilot deaths | 0.24 | 0.3 | 3532 | 79 |
