Perhaps you should try some spelling variations:
computer man » computer human (Expand Search), computer mass (Expand Search), computer maze (Expand Search)
pair complex » repair complex (Expand Search), repair complexes (Expand Search)
complex can » complex case (Expand Search), complex care (Expand Search), complex cancer (Expand Search)
carlos nava » carlos navarro (Expand Search), carlos eslava (Expand Search), carlos zavala (Expand Search)
l computer » il computer (Expand Search), al computer (Expand Search), dal computer (Expand Search)
co2 carlos » 232 carlos (Expand Search), co2 carbon (Expand Search), co2 cenarios (Expand Search)
man newly » men newly (Expand Search), can newly (Expand Search), a newly (Expand Search)
nacl co2 » nacl co (Expand Search)
can now » can non (Expand Search), can new (Expand Search), can ngoc (Expand Search)
5 pair » 5 pairs (Expand Search), a pair (Expand Search), _ pair (Expand Search)
3 nacl » _ nacl (Expand Search), 3.5 nacl (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (( j l computer man newly ) or ((( 5 pair complex can now ) or ( 3 nacl co2 carlos nava ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j l computer man newly ) OR ((( 5 pair complex can now ) OR ( 3 nacl co2 carlos nava )))).
• Adding a wildcard symbol may retrieve word variants: (( j l computer man newly ) or ((( 5 pair complex can now ) or ( 3 nacl co2 carlos nava ))))*.