я работала учителем русского языка

я работала учителем русского языка в школе в течение 5 лет

Результаты (английский) 1:

I worked as a teacher of the Russian language in school for 5 years

Результаты (английский) 2:

I worked as a teacher of Russian language at school for 5 years

Результаты (английский) 3:

I worked as a teacher in the Russian language school in 5 years