Multiple text in a cell

Hi

Please can someone help

I have text in columns that uses multiple words example, annual leave, sick leave, maternity leave and i want to add the number of times leave appears in a worksheet irrespective of what type of leave it is. I don't want to type each leave type in the formula. I am hoping there would be a way to ignore the first word and just use the leave word.

please can you help with a formula.

Greatly appreciate