| English | Russian |
| by trial and error | путём проб и ошибок (Alexander Demidov) |
| by trial and error | набивая шишки |
| by trial and error | эмпирически |
| by trial and error | экспериментальным путём (By trying out several methods and discarding those which prove unsuccessful. CD Alexander Demidov) |
| find by trial and error | подобрать экспериментальным путём (Alexander Demidov) |
| selection by trial and error | подбор (Alexander Demidov) |