Perhaps you should try some spelling variations:
coombes john » coombs john (Expand Search), combes john (Expand Search), coombes jason (Expand Search)
complex tran » complex trans (Expand Search), complex tehran (Expand Search), complex trait (Expand Search)
carmo carlos » cardo carlos (Expand Search), caro carlos (Expand Search), carlo carlos (Expand Search)
carlos joel » carlson joel (Expand Search), carlos jose (Expand Search), carlos joao (Expand Search)
yl complex » gl complex (Expand Search), cl complex (Expand Search), fl complex (Expand Search)
l coombes » k coombes (Expand Search), l coomber (Expand Search), m coombes (Expand Search)
john new » john agnew (Expand Search), john neil (Expand Search), john noel (Expand Search)
3 nacl » _ nacl (Expand Search), 3.5 nacl (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( j l coombes john new ) OR ((( 2 yl complex tran ngoc ) OR ( 3 nacl carmo carlos joel ))))~".
• Adding a wildcard symbol may retrieve word variants: (( j l coombes john new ) OR ((( 2 yl complex tran ngoc ) OR ( 3 nacl carmo carlos joel ))))*.