ADJ

doctoral, MA, Master's, MSc, PhD, etc.
chemistry, geology, etc.
research

VERB + THESIS

work on
complete, do, write (up)
submit
publish

THESIS + NOUN

research, title, topic

PREP

by ~
She completed an MSc by thesis
in a/the ~
research presented in a thesis
~ about/on
He's doing a doctoral thesis on the early works of Shostakovich

ADJ

basic, central, main

VERB + THESIS

prove, support
The results of the experiment support his central thesis
disprove
advance
He advanced the thesis that too much choice was burdensome to people
challenge, refute

PREP

~ about
a thesis about the effects of new technology on skills