We have about 40 Japanese words in our website's home page meta title, but Google.co.jp is showing only one keyword of title in search results when searching for 4 keywords related to this page and showing title correct for other list of keywords.
The same effect also found for our other website and for one competitor listed below it.
Does Google doing some kind research related to title display or its due to the some kind of error.
Google Webmaster tools is showing everything fine.
Please help me to find the cause of this issue.