Google scholar search query issue Last year Economics of Governance (Springer) published an article that I co-authored  titled "Political determinants of fiscal transparency: a panel data empirical investigation". 
Google Scholar  appears to find the article only if I search for the complete title or search for political determinants of fiscal transparency. If I enter any other combination of words of the title or the keywords  in the search query the article disappears from the results. 
Even more strangely, Google Scholar does not find the article when I look for political determinants fiscal transparency. How is it possible that the word of makes such a difference for Google Scholar?

Thank you!

P.S. I wrote to the journal and they replied that this is how it is supposed to work, but this answer is not really convincing.
I don't think it disappears: it's probably just ranked low in the general query results. 

If you restrict the search with keywords "political determinants fiscal transparency" to "results since 2017" (https://scholar.google.com/scholar?as_ylo=2017&amp;q=political+determinants+fiscal+transparency&amp;hl=en&amp;as_sdt=0,33) (note the "as_ylo=2017" in the URL), your paper is ranked first.