Perhaps you should try some spelling variations:
nucl complex » nacl complex (Expand Search), nuclei complex (Expand Search), gull complex (Expand Search)
grid company » good company (Expand Search), rfid company (Expand Search), grid companies (Expand Search)
company rare » company rafel (Expand Search), company share (Expand Search), company case (Expand Search)
del comer » del comedor (Expand Search), del colera (Expand Search), del comun (Expand Search)
comer dan » romer dan (Expand Search), comer diane (Expand Search), comer vann (Expand Search)
case note » case notes (Expand Search)
dan net » dan neal (Expand Search)
5 nucl » 5 null (Expand Search), 3 nucl (Expand Search)
3 grid » 3d grid (Expand Search), _ grid (Expand Search), a grid (Expand Search)
j del » y del (Expand Search), m del (Expand Search), _ del (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 del comer dan net ) or ((( 5 nucl complex case note ) or ( 3 grid company rare non ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( j del comer dan net ) OR ((( 5 nucl complex case note ) OR ( 3 grid company rare non )))).
• Adding a wildcard symbol may retrieve word variants: (( j del comer dan net ) or ((( 5 nucl complex case note ) or ( 3 grid company rare non ))))*.