Perhaps you should try some spelling variations:
complex trex » complex tree (Expand Search), complex tetrex (Expand Search), complex tric (Expand Search)
iii complex » ii complex (Expand Search), iii complexes (Expand Search), ii complexes (Expand Search)
nano carlos » cano carlos (Expand Search), nino carlos (Expand Search), nuno carlos (Expand Search)
choi bacon » chow bacon (Expand Search), choi aaron (Expand Search), choi jacob (Expand Search)
bacon new » bacon's new (Expand Search), bacon neil (Expand Search), bacon e (Expand Search)
trex ngoa » trieu ngoa (Expand Search)
nacl nano » nacl kno (Expand Search), nacl nabr (Expand Search), nacl naoh (Expand Search)
l choi » il choi (Expand Search), l chow (Expand Search), sil choi (Expand Search)
3 nacl » _ nacl (Expand Search), 3.5 nacl (Expand Search)
5 iii » 25 iii (Expand Search), t5 iii (Expand Search), _ iii (Expand Search)
nunez » nunes (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 choi bacon new ) or ((( 5 iii complex trex ngoa ) or ( 3 nacl nano carlos nunez ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j l choi bacon new ) OR ((( 5 iii complex trex ngoa ) OR ( 3 nacl nano carlos nunez )))).
• Adding a wildcard symbol may retrieve word variants: (( j l choi bacon new ) or ((( 5 iii complex trex ngoa ) or ( 3 nacl nano carlos nunez ))))*.