Perhaps you should try some spelling variations:
technical scientific » techno scientific, medical scientific, social scientific
critical scientific » clinical scientific, original scientific, empirical scientific
mark webber » mr webber, mark weiser, mark yeber
mark weber » marx weber, mark yeber, maria weber

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((mark webber) OR (mark weber)) (((technical scientific) OR (critical scientific))).
• Adding a wildcard symbol may retrieve word variants: ((mark webber) or (mark weber)) (((technical scientific) or (critical scientific)))*.