Talvez debería tentar con algunhas variantes ortográficas:
simulation environments » simulation environment, population environment, population environmental
chapter functions » chapter 2functions, taper functions, chapter questions
channel functions » channels functions, channel function, channel junction
concept cases » concepts cases, concept based, concepts case

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: simulation environments ((chapter functions) OR (channel functions)) concept cases~.
• Adding a wildcard symbol may retrieve word variants: simulation environments ((chapter functions) or (channel functions)) concept cases*.