How relevant do they have to be before you include them?
How do they fit into the existing body of knowledge?
Even for native speakers of English who write very well in other styles, one notices an enormous improvement in the first drafts from the first to the last chapter written.
How I wrote a PhD thesis in 3 months - James Hayton …
Whenever you sit down to write, it is very important to write So write something, even if it is just a set of notes or a few paragraphs of text that you would never show to anyone else.
How to write a thesis proposal I
A summing up should repeat the most important issues raised in your thesis (particularly in the discussion), although preferably stated in a (slightly) different way. For example, you could frame the issues within a wider context.
How To Write Master Thesis Report - …
Once you have a list of chapters and, under each chapter heading, a reasonably complete list of things to be reported or explained, you have struck a great blow against writer's block.
Master Thesis Examination Report
The final section of your thesis may take one of several different forms. Some theses need a conclusion, while for others a summing up will be appropriate. The decisive factor will be the nature of your thesis statement and research question.
from "How to Write a Thesis" ..
The discussion will consist of argumentation. In other words, you investigate a phenomenon from several different perspectives. To discuss means to question your findings, and to consider different interpretations. Here are a few examples of formulations that signal argumentation: