Looking on the internet deeply has found these results:

madatory is the most popular phrase on the web.

compulsary 154,400,000 results on the web	madatory 1139,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
compulsory expenditure. compulsory expenditure could also be done away with. inLatvia, 'Veselības obligātās apdrošināšanas valsts aģentūra' (Health Compulsary Insurance State Agency) Agricultural expenditure now divides into compulsory and non compulsory expenditure. The distinction between compulsory and non The Commission is therefore not entitled to introduce a compulsary tool as regards CV certification. Mr Wynn's second question concerned the two billion cut in compulsory and non	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

compulsary

154,400,000 results on the web

madatory

1139,000,000 results on the web

More popular!

compulsory expenditure.
compulsory expenditure could also be done away with.
inLatvia, 'Veselības obligātās apdrošināšanas valsts aģentūra' (Health Compulsary Insurance State Agency)
Agricultural expenditure now divides into compulsory and non
compulsory expenditure.
The distinction between compulsory and non
The Commission is therefore not entitled to introduce a compulsary tool as regards CV certification.
Mr Wynn's second question concerned the two billion cut in compulsory and non

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.