Perhaps you should try some spelling variations:
coat complex » cobalt complex (Expand Search), joint complex (Expand Search), about complex (Expand Search)
complex tcr » complex tcc (Expand Search), complex tc (Expand Search), complex tpr (Expand Search)
cano carlos » luciano carlos (Expand Search), casiano carlos (Expand Search), bacino carlos (Expand Search)
carlos nada » carlos nadaf (Expand Search), carlos nava (Expand Search), carlos nara (Expand Search)
nacl cano » nacl nano (Expand Search), nacl caso4 (Expand Search), nacl cacl (Expand Search)
c forbes » d forbes (Expand Search)
john new » john agnew (Expand Search), john neil (Expand Search), john n (Expand Search)
7.5 nacl » 3.5 nacl (Expand Search), 0.9 nacl (Expand Search)
5 coat » 5 coal (Expand Search), b coat (Expand Search), 5 cobalt (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 c forbes john new ) OR ((( 5 coat complex tcr nlo ) OR ( 7.5 nacl cano carlos nada ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j c forbes john new ) or ((( 5 coat complex tcr nlo ) or ( 7.5 nacl cano carlos nada ))))*.