Talvez debería tentar con algunhas variantes ortográficas:
combustiveis » combustions, combustibles
comestible » combustible, compatible, compressible
fossilis" » fossils", fossili", fossil"
fossilised" » fossilsed", fossilied", fossiled", fossilized"
fossiled" » fossile", fossiles", fossilized"

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: "((combustiveis or comestible) or combustion) (fossilis" OR (fossilised" or fossiled"))~.
• Removing quotes may allow a broader search: ((combustiveis or comestible) or combustion) (fossilis or (fossilised or fossiled ))~.
• Adding a wildcard symbol may retrieve word variants: "((combustiveis or comestible) or combustion) (fossilis" or (fossilised" or fossiled"))*.