Perhaps you should try some spelling variations:
complex tran » complex trans (Expand Search), complex tehran (Expand Search), complex trait (Expand Search)
nail complex » snail complex (Expand Search), tail complex (Expand Search), snail1 complex (Expand Search)
casali carlo » capelli carlo (Expand Search), galli carlo (Expand Search)
combs con » combs colin (Expand Search), combs john (Expand Search), combs cody (Expand Search)
7.5 nacl » 3.5 nacl (Expand Search), 0.9 nacl (Expand Search)
carlo na » carlo a (Expand Search), carlo n (Expand Search), carlo nasi (Expand Search)
e combs » sex combs (Expand Search)
con net » con nee (Expand Search), non net (Expand Search), upon net (Expand Search)
5 nail » _ nail (Expand Search), a nail (Expand Search), 3 nail (Expand Search)
ngoc » ngo (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 e combs con net ) or ((( 5 nail complex tran ngoc ) or ( 7.5 nacl casali carlo na ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j e combs con net ) OR ((( 5 nail complex tran ngoc ) OR ( 7.5 nacl casali carlo na )))).
• Adding a wildcard symbol may retrieve word variants: (( j e combs con net ) or ((( 5 nail complex tran ngoc ) or ( 7.5 nacl casali carlo na ))))*.