Perhaps you should try some spelling variations:
complex tris » complex tric (Expand Search), complex trs (Expand Search), complex traits (Expand Search)
combs colic » combs colin (Expand Search), combe colin (Expand Search)
nano carlos » cano carlos (Expand Search), nino carlos (Expand Search), nuno carlos (Expand Search)
il complex » oil complex (Expand Search), iol complex (Expand Search), gl complex (Expand Search)
carlos noe » carlos nobre (Expand Search), carlos nojek (Expand Search), carlos n (Expand Search)
colic new » coli new (Expand Search)
tris ngoc » trinh ngoc (Expand Search), trieu ngoc (Expand Search), thi ngoc (Expand Search)
nacl nano » nacl kno (Expand Search), nacl nabr (Expand Search), nacl naoh (Expand Search)
l combs » e combs (Expand Search), _ combs (Expand Search), l comps (Expand Search)
2 il » _ il (Expand Search), 2 yl (Expand Search), e 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 colic new ) or ((( 2 il complex tris ngoc ) or ( 3.5 nacl nano carlos noe ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j l combs colic new ) OR ((( 2 il complex tris ngoc ) OR ( 3.5 nacl nano carlos noe )))).
• Adding a wildcard symbol may retrieve word variants: (( j l combs colic new ) or ((( 2 il complex tris ngoc ) or ( 3.5 nacl nano carlos noe ))))*.