Perhaps you should try some spelling variations:
computer cases » computer case (Expand Search), computer classes (Expand Search), computer caries (Expand Search)
dal computer » dental computer (Expand Search), small computer (Expand Search), local computer (Expand Search)
can never » than never (Expand Search), a never (Expand Search), has never (Expand Search)
dna clamp » a clamp (Expand Search)
clamp can » clamp a (Expand Search), clamp ar (Expand Search), clamp cum (Expand Search)
can newts » can new (Expand Search), can net (Expand Search), can newly (Expand Search)
cases now » cases new (Expand Search), cases non (Expand Search), case now (Expand Search)
cpre can » care can (Expand Search), core can (Expand Search), cre can (Expand Search)
j dna » _ dna (Expand Search), a dna (Expand Search), 1 dna (Expand Search)
j dal » j dale (Expand Search), j daly (Expand Search), j dahl (Expand Search)
j la » j a (Expand Search), j l (Expand Search), j da (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 la cpre can never ) or ( j dna clamp can newts ))) or ( j dal computer cases now ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( j la cpre can never ) OR ( j dna clamp can newts ))) OR ( j dal computer cases now )).
• Adding a wildcard symbol may retrieve word variants: (((( j la cpre can never ) or ( j dna clamp can newts ))) or ( j dal computer cases now ))*.