I have written sth brief about the interpretation of our results, and mentioned some limitations of the study... but what else to say? I don't know what to say, and how to talk about the rest of the way to the front
Do you mean your study has found that p doesn't influence q? That "x" is not a member of Class X? Or something similar?
If so, what's the broader significance of that finding? In light of whatever debates or controversies are taking place in your discipline on this topic.
Your discussion should still compare your findings (including negative findings) to past studied and show whether your results are consistent with past research.Then attempt to explain WHY the result was negative.
In the study below, my co-authors and I argue that negative findings are just as important as positive findings, because they help us know what has been tried and did not work, so we can better focus our future research.
Article Curriculum integration of MALL in L1/L2 pedagogy: Perspectiv...
It depends on what you mean by "negative results." I think result is important. it may not be statistically significant, or have a large effect size, but that does not mean it isn't important, and of value. I agree with Dr. Marek that you should go ahead and discuss your findings in light of other reports. You have tried, you have found results which were called "negative," but this will help you and others design other studies.
You may explain the possible reasons for the results of the study aside from mentioning the limitations, you may consider the nature of your participants and the context or environment where you conducted your study. You need to get literature or studies to back up your claim