Question: A central basis of the analysis of his texts is von Spaeths use of a principle adopted by Max Weber the sociologist and anthropologist who calls it Verstehen
Please fix the punctuation.
Fixed: [A central basis of the analysis of his texts is von Spaeth's use of a principle adopted by Max Weber, the sociologist and anthropologist, who calls it "Verstehen".]

Question: Product descriptions and specifications are based on information sites of manufacturers Scope of delivery performance and appearance of a vacuum cleaner LG VC60163ND are subject to change without notice
Please fix the punctuation.
Fixed: [Product descriptions and specifications are based on information sites of manufacturers. Scope of delivery, performance and appearance of a vacuum cleaner LG V-C60163ND are subject to change without notice.]

Question: Spectacles goggles and the like corrective protective or other excl spectacles for testing eyesight contact lenses spectacle lenses and frames and mountings for spectacles
Please fix the punctuation.
Fixed: [Spectacles, goggles and the like, corrective, protective or other (excl. spectacles for testing eyesight, contact lenses, spectacle lenses and frames and mountings for spectacles)]

Question: This made me realise the obvious truth that every researcher had to be independent
Please fix the punctuation.
Fixed:
[This made me realise the obvious truth that every researcher had to be independent.]