Perhaps you should try some spelling variations:
medical scientists » biomedical scientists, american scientists, physical scientists
robert wells » robert willis, robert bell, robert willan
robert wilks » robert walker, robert wilson, robert willan
robert watt » robert watson, robert white

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: ((((robert wells) OR (robert wilks))) OR (robert watt)) (medical scientists).
• Adding a wildcard symbol may retrieve word variants: ((((robert wells) or (robert wilks))) or (robert watt)) (medical scientists)*.