chrome is having some inbuilt module which are not of any use of general user and they really dont know this, so you may use these exploit or module to check what your kid/bf/gf are visiting even their browser history is clean.
1. chrome://predictors/ copy pest in chrome, will show the frequent keywords used to open a site
2- chrome://dns/ will simply list the site opened on system
3. chrome://cache/ will open the internal pages that were open
try yourself and let me know if these works for you. have a safe browsing