How can we address this problem? - Two Ways
Users who are not sure enough about the spellings should search over Hinduism site or atleast on Google
Users on this site should start editing the post to maintain consistency with the spellings and grammar.
I don't think first point needs any explanation, it already states what a user should do.
Taking about point two :-
Few days back, I raised a question on meta - Users should make use of their privileges where one of the point was Edit questions, retag them if required, rectify grammar, spell check etc
I am highly active since the site started and I've seen very little number of users who are actively participating in site activities like editing posts, reviewing posts, re-tagging questions, up voting posts which are good, equally down voting if they are bad, flagging.
If I take your example, you are visiting the site since 17 days consecutively and visited for 36 days in total, and your review stats say that you have only one suggested edit. Its not only you, there are many others who are active but are not using their privileges so start using them.
Also, users should take care when they are creating tags, for example, take this post, now we already have a tag called aatma but because users are not taking efforts to check first, they create new tag, in this, it was
athma which further leads to inconsistent tagging.
There was a similar scenario over here for mahabharata
If users are not sure about spellings, join the Hinduism room where others will help, if he is not sure about tags, ask questions on meta.
And again, about the post body, I would say users should start editing posts if they are aware of a particular topic. There is no other way to solve the issue.