| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what helmet was used in vietnam | 1.5 | 0.4 | 8750 | 34 |
| what helmet was used in the us vietnam war | 0.14 | 1 | 2501 | 47 |
| what helmet was used in the vietnam war | 1.74 | 1 | 406 | 6 |
| used vietnam war helmet | 0.02 | 0.5 | 5312 | 48 |
| helmet used in vietnam | 0.25 | 0.8 | 9154 | 69 |
| vietnam war army helmet | 0.71 | 0.7 | 4111 | 34 |
| us vietnam war helmet | 1.62 | 0.8 | 5841 | 84 |
| vietnam war helmet for sale | 0.12 | 0.1 | 174 | 32 |
| american vietnam war helmet | 0.98 | 0.2 | 3093 | 39 |
| vietnam war flight helmet | 0.53 | 1 | 3153 | 4 |
| vietnam war era helmet | 1.56 | 1 | 315 | 32 |
| authentic vietnam war helmet | 1.67 | 0.5 | 9615 | 91 |
| vietnam war helicopter helmet | 0.92 | 0.4 | 384 | 25 |
| american helmet during vietnam | 1.22 | 1 | 8916 | 31 |
| vietnam war us army helmet for sale | 0.69 | 0.2 | 6732 | 39 |
| vietnam helmet for sale | 0.18 | 0.2 | 7424 | 57 |
| vietnam era army helmet | 1.76 | 0.4 | 7443 | 18 |
| us army vietnam helmet | 1.24 | 0.2 | 774 | 49 |
| what types of helmets did vietcong use | 0.49 | 0.2 | 7180 | 81 |
