Perhaps you should try some spelling variations:
abnormal complex » abnormal complete (Expand Search), normal complex (Expand Search), abnormal copper (Expand Search)
complex tien » complex times (Expand Search), complex than (Expand Search), complex time (Expand Search)
carlos now » carlos noe (Expand Search), carlos noa (Expand Search), carlos novo (Expand Search)
tien ngoc » tran ngoc (Expand Search), diep ngoc (Expand Search), tuan ngoc (Expand Search)
l champs » _ champs (Expand Search), a champs (Expand Search), g champs (Expand Search)
7.5 nacl » 3.5 nacl (Expand Search), 0.9 nacl (Expand Search)
l carlos » gil carlos (Expand Search)
nacl l » nacl _ (Expand Search), nacl a (Expand Search), nacl e (Expand Search)
c net » c neto (Expand Search), _ net (Expand Search), u net (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 champs c net ) or ((( _ abnormal complex tien ngoc ) or ( 7.5 nacl l carlos now ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j l champs c net ) OR ((( _ abnormal complex tien ngoc ) OR ( 7.5 nacl l carlos now )))).
• Adding a wildcard symbol may retrieve word variants: (( j l champs c net ) or ((( _ abnormal complex tien ngoc ) or ( 7.5 nacl l carlos now ))))*.