Perhaps you should try some spelling variations:
complex thanh » complex than (Expand Search), complex thin (Expand Search), complex things (Expand Search)
tail complex » oil complex (Expand Search), atrial complex (Expand Search), basal complex (Expand Search)
combs loss » combs locus (Expand Search), combs lisa (Expand Search)
con carlos » don carlos (Expand Search), leon carlos (Expand Search), jhon carlos (Expand Search)
carlos noa » carlos noe (Expand Search), carlos nodal (Expand Search), carlos nava (Expand Search)
thanh ngo » thanh ngoc (Expand Search), thang ngo (Expand Search), khanh ngoc (Expand Search)
nucl con » nucleo con (Expand Search)
l combs » e combs (Expand Search), _ combs (Expand Search), l comps (Expand Search)
5 tail » _ tail (Expand Search), a tail (Expand Search), 3 tail (Expand Search)
3 nucl » 3 null (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 l combs loss new ) OR ((( 5 tail complex thanh ngo ) OR ( 3 nucl con carlos noa ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j l combs loss new ) or ((( 5 tail complex thanh ngo ) or ( 3 nucl con carlos noa ))))*.