Perhaps you should try some spelling variations:
metil complex » metal complex (Expand Search), metals complex (Expand Search), met complex (Expand Search)
complex tail » complex task (Expand Search), complex thin (Expand Search), complex tap (Expand Search)
carlos nocek » carlos nojek (Expand Search), carlos noceda (Expand Search), carlos nick (Expand Search)
cano carlos » luciano carlos (Expand Search), bacino carlos (Expand Search), solano carlos (Expand Search)
tail ngoc » tai ngoc (Expand Search), tail non (Expand Search)
nac cano » c cano (Expand Search), ac can (Expand Search), dac can (Expand Search)
l combs » e combs (Expand Search), _ combs (Expand Search), l comps (Expand Search)
combs c » combs _ (Expand Search)
5 metil » 5 methyl (Expand Search)
3.5 nac » 3.5 nacl (Expand Search), 7.5 nacl (Expand Search)
c none » c nones (Expand Search), c noone (Expand Search), _ none (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 none ) or ((( 5 metil complex tail ngoc ) or ( 3.5 nac cano carlos nocek ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j l combs c none ) OR ((( 5 metil complex tail ngoc ) OR ( 3.5 nac cano carlos nocek )))).
• Adding a wildcard symbol may retrieve word variants: (( j l combs c none ) or ((( 5 metil complex tail ngoc ) or ( 3.5 nac cano carlos nocek ))))*.