THM is short for THerMal. That is the system temperatures usually...but don't base your readings off of just one utilty. If the MFG has one specific or you can access temps in BIOS, trust those first. Try other utilities such as AIDA, OCCT, Open Hardware Monitor, and make sure you're using the newest version of HWMON. I would focus on CPU core temps, GPU temps and HDD temps. Keep the HDD below 50C, CPU and GPU below 100C tops, and preferably 80C and you'll be fine for most laptops that is within built parameters in my experience.