Perhaps you should try some spelling variations:
methyl complex » metal complex (Expand Search), method complex (Expand Search), methylase complex (Expand Search)
complex trex » complex tree (Expand Search), complex tetrex (Expand Search), complex tric (Expand Search)
carlos nara » carlos lara (Expand Search), carlos nava (Expand Search), carlos jara (Expand Search)
kno carlos » cano carlos (Expand Search), nino carlos (Expand Search), pino carlos (Expand Search)
campo non » campo nos (Expand Search), campo ancon (Expand Search), campo novo (Expand Search)
trex ngoa » trieu ngoa (Expand Search)
7.5 nacl » 3.5 nacl (Expand Search), 0.9 nacl (Expand Search)
nacl kno » nacl nano (Expand Search), nacl en (Expand Search), nacl kcl (Expand Search)
l campo » el campo (Expand Search), al campo (Expand Search), l campos (Expand Search)
non net » non nest (Expand Search), con net (Expand Search), non nef (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.

• Removing quotes may allow a broader search: (( j l campo non net ) or ((( 5 methyl complex trex ngoa ) or ( 7.5 nacl kno carlos nara ))))~.