Perhaps you should try some spelling variations:
complex cases » complex causes (Expand Search), complex case (Expand Search), complex care (Expand Search)
tail complex » oil complex (Expand Search), atrial complex (Expand Search), basal complex (Expand Search)
his company » kibs company (Expand Search), gas company (Expand Search), us company (Expand Search)
company cas » company case (Expand Search), company cars (Expand Search), company car (Expand Search)
ali comet » ali achmet (Expand Search), ali ahmet (Expand Search), a comet (Expand Search)
comet can » comes can (Expand Search), comment can (Expand Search), comet jean (Expand Search)
cases now » cases new (Expand Search), cases non (Expand Search), case now (Expand Search)
cas now » case now (Expand Search), has now (Expand Search), cas new (Expand Search)
5 tail » _ tail (Expand Search), a tail (Expand Search), 3 tail (Expand Search)
j ali » m ali (Expand Search), _ ali (Expand Search), a ali (Expand Search)
2 his » _ his (Expand Search), 2 has (Expand Search), 2 hiv (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 ali comet can new ) OR ((( 5 tail complex cases now ) OR ( 2 his company cas now ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j ali comet can new ) or ((( 5 tail complex cases now ) or ( 2 his company cas now ))))*.