Perhaps you should try some spelling variations:
natural complex » natural complexity (Expand Search), natural compound (Expand Search)
company based » competency based (Expand Search)
complex can » complex case (Expand Search), complex care (Expand Search), complex cancer (Expand Search)
oil company » oil companies (Expand Search)
based node » based anode (Expand Search), based anodes (Expand Search), based novel (Expand Search)
comer can » omer can (Expand Search), comer dan (Expand Search), comes can (Expand Search)
can newly » a newly (Expand Search), men newly (Expand Search), non newly (Expand Search)
al comer » all comer (Expand Search), el comer (Expand Search), del comer (Expand Search)
l oil » _ oil (Expand Search)
j al » j a (Expand Search), j l (Expand Search)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

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: (( j al comer can newly ) OR ((( 1 natural complex can new ) OR ( l oil company based node ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j al comer can newly ) or ((( 1 natural complex can new ) or ( l oil company based node ))))*.