Perhaps you should try some spelling variations:
carlos navarro » carmen navarro (Expand Search)
bacilo carlos » bacino carlos (Expand Search), bacila carlos (Expand Search), barcelo carlos (Expand Search)
complex tram » complex team (Expand Search), complex trauma (Expand Search), complex trait (Expand Search)
del bacilo » del bajio (Expand Search), de bacilos (Expand Search), del baile (Expand Search)
l complex » cell complex (Expand Search)
tram ngoc » tran ngoc (Expand Search), tam ngoc (Expand Search), pham ngoc (Expand Search)
l combs » e combs (Expand Search), _ combs (Expand Search), l comps (Expand Search)
combs c » combs _ (Expand Search)
7.5 del » 7.5 gel (Expand Search), 75 del (Expand Search), 373.5 del (Expand Search)
c neu » 2 neu (Expand Search)
5 l » 5 yl (Expand Search), 5 il (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 combs c neu ) or ((( 5 l complex tram ngoc ) or ( 7.5 del bacilo carlos navarro ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j l combs c neu ) OR ((( 5 l complex tram ngoc ) OR ( 7.5 del bacilo carlos navarro )))).
• Adding a wildcard symbol may retrieve word variants: (( j l combs c neu ) or ((( 5 l complex tram ngoc ) or ( 7.5 del bacilo carlos navarro ))))*.