Thaism or Theism: How To spell?

The word Thaism is misspelled against Theism, meaning "Belief in God."

Word contains consecutive vowels 'EI' in between alphabets th & sm is misspelled as 'AI'
Wrong Spelling:  th-ai-sm 
Correct Spelling:  th-ei-sm 
Find more wrongly spelled words of Theism to spell it well.