put one's shoulder to the wheel vs set to work

put one's shoulder to the wheel

verb

Synonym of strive: To work hard, to complete an activity with one's complete effort and focus.

set to work

verb

To begin working.
To cause to begin working.
To begin working at.

How often have the words put one's shoulder to the wheel and set to work occurred in a corpus of books? (source: Google Ngram Viewer )