Searching all the content within pdf documents is very much needed feature and now a days it is there in all most every pdf app. I took it for granted and was shocked that MarginNote which boasts feature richness doesn’t have it. Kindly add this to your queue of requested features. I am sure a lot of people are eagerly waiting for this feature.
Almost every app I know have this feature: pdf expert, Adobe, GoodNotes, notability, Idk about liquidtext