Perhaps you should try some spelling variations:
complex tian » complex than (Expand Search), complex tidal (Expand Search), complex time (Expand Search)
carlos rojek » carlos nojek (Expand Search), carlos rojas (Expand Search), carlos roger (Expand Search)
combs colic » combs colin (Expand Search), combe colin (Expand Search)
oil complex » cell complex (Expand Search)
nao carlos » sao carlos (Expand Search), cao carlos (Expand Search), rao carlos (Expand Search)
tian ngoc » tran ngoc (Expand Search), tuan ngoc (Expand Search), tien ngoc (Expand Search)
0.9 nacl » 3.5 nacl (Expand Search)
nacl nao » nacl nano (Expand Search), nacl naoh (Expand Search), nacl na (Expand Search)
e combs » sex combs (Expand Search)
colic n » colic _ (Expand Search), colic a (Expand Search), colic m (Expand Search)
5 oil » _ oil (Expand Search), l oil (Expand Search), 5 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( j e combs colic n ) OR ((( 5 oil complex tian ngoc ) OR ( 0.9 nacl nao carlos rojek ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j e combs colic n ) or ((( 5 oil complex tian ngoc ) or ( 0.9 nacl nao carlos rojek ))))*.