Perhaps you should try some spelling variations:
mining complex » binding complex (Expand Search), training complex (Expand Search), evening complex (Expand Search)
complex atrial » complex bacterial (Expand Search), complex atypical (Expand Search)
semino carlos » serrano carlos (Expand Search), bacino carlos (Expand Search), solano carlos (Expand Search)
atrial ngoc » atrial nao (Expand Search), atrial block (Expand Search)
carlos nava » carlos navarro (Expand Search), carlos eslava (Expand Search), carlos zavala (Expand Search)
a mining » a mini (Expand Search)
0.9 natl » 0.9 nacl (Expand Search)
l comes » l comps (Expand Search), l coles (Expand Search), l comas (Expand Search)
comes i » comes _ (Expand Search), comes a (Expand Search), gomes i (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 l comes i neto ) OR ((( a mining complex atrial ngoc ) OR ( 0.9 natl semino carlos nava ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j l comes i neto ) or ((( a mining complex atrial ngoc ) or ( 0.9 natl semino carlos nava ))))*.