I have created a page on Wiki and I want to make the contents of this page searchable via wiki search option.
Wiki mean Wikipedia
i.e. title/heading of page is "ABCDEFG". If someone search "ABCD" in wiki search then this page should appear in search list.
May be its possible through adding tags into wiki page, but I don't know how to add meta tags in wiki. Or someone know some other way?
Thanks in advance.
Everything in the page (both title and content) will be searched, so when your page contains the word it will be found.
You could force the find by creating a redirect from ABCD to ABCDEFG, altough it that is useless when the redirect title is the first part of the actual title - people will find that with the search autocompletion/suggestion.
Note that the indexing of newly created pages can take its time, especially on large wikis like Wikipedia. Your page might not be found instantly after you saved it.