Perhaps you should try some spelling variations:
complejo bich » complejo bis (Expand Search), complejo buco (Expand Search), complejo cubico (Expand Search)
yl complejo » el complejo (Expand Search), al complejo (Expand Search), y complejo (Expand Search)
nano carlos » cano carlos (Expand Search), nino carlos (Expand Search), nuno carlos (Expand Search)
combe coli » combe colin (Expand Search), combs colin (Expand Search), combe nicole (Expand Search)
carlos noe » carlos nobre (Expand Search), carlos nojek (Expand Search), carlos n (Expand Search)
nacl nano » nacl kno (Expand Search), nacl nabr (Expand Search), nacl naoh (Expand Search)
7.5 nacl » 3.5 nacl (Expand Search), 0.9 nacl (Expand Search)
l combe » la combe (Expand Search), _ combe (Expand Search), l combs (Expand Search)
5 yl » 2 yl (Expand Search), 1 yl (Expand Search), 4 yl (Expand Search)
ngoc » ngo (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 combe coli new ) or ((( 5 yl complejo bich ngoc ) or ( 7.5 nacl nano carlos noe ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j l combe coli new ) OR ((( 5 yl complejo bich ngoc ) OR ( 7.5 nacl nano carlos noe )))).
• Adding a wildcard symbol may retrieve word variants: (( j l combe coli new ) or ((( 5 yl complejo bich ngoc ) or ( 7.5 nacl nano carlos noe ))))*.