Use tags that are actually relevant to your question
When tagging your question, go by what the question is actually about, not by what it is only related to. This way, you can help future users to find questions addressing their problems.
For example, almost every question on this site is somewhat related to research, because that’s what academians do. If you are asking about, e.g., how to best cite something, you are probably doing so because you are publishing your research. Such a question would only be relatedrelated to research, but not aboutabout it, and should thus not be tagged research. If you are however asking on how to best organise your research, the question is actually aboutabout research and thus deserves the tag.
In another example, when you have a question about how to cite something that came up when writing a thesis, the same question might as well have arisen when writing a paper. In this case the question is not about theses and should thus should not be tagged thesis.
The following tags are often used spuriously: phd, masters, thesis, research, publications, university, students, professors, conference, graduate-school.