Manicheesm or Manicheism: How To spell?

The word Manicheesm is misspelled against Manicheism, a noun meaning "The doctrines taught, or system of principles maintained, by the Manichaeans."

Word contains consecutive vowels 'EI' in between alphabets manich & sm is misspelled as 'EE'
Wrong Spelling:  manich-ee-sm 
Correct Spelling:  manich-ei-sm 
Find more wrongly spelled words of Manicheism to spell it well.