Talvez deva tentar algumas variações de ortografia:
anxiety compared » anxiety comparing (Expandir a Pesquisa), anxiety impaired (Expandir a Pesquisa), anxiety comfort (Expandir a Pesquisa)
computer cases » computer case (Expandir a Pesquisa), computer classes (Expandir a Pesquisa), computer caries (Expandir a Pesquisa)
computed pain » computed brain (Expandir a Pesquisa), compounded pain (Expandir a Pesquisa), computed using (Expandir a Pesquisa)
can computed » can computer (Expandir a Pesquisa), a computed (Expandir a Pesquisa), brain computed (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
cases now » cases new (Expandir a Pesquisa), cases non (Expandir a Pesquisa), case now (Expandir a Pesquisa)
c anxiety » ic anxiety (Expandir a Pesquisa), _ anxiety (Expandir a Pesquisa), 2 anxiety (Expandir a Pesquisa)
pain now » pain new (Expandir a Pesquisa), pain non (Expandir a Pesquisa)
3 small » u3 small (Expandir a Pesquisa), 1 small (Expandir a Pesquisa), 40 small (Expandir a Pesquisa)
j can » j cano (Expandir a Pesquisa), j cant (Expandir a Pesquisa), _ can (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( j can computed pain now ) or ( 3 small computer cases now ))) or ( c anxiety compared a now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j can computed pain now ) OR ( 3 small computer cases now ))) OR ( c anxiety compared a now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j can computed pain now ) or ( 3 small computer cases now ))) or ( c anxiety compared a now ))*.