Talvez debería tentar con algunhas variantes ortográficas:
ionization instruction » cognition instruction, operation instruction, ionization instrumentation
instruction theory » introduction theory, institutional theory
theory decision » theory design
basic nuclear » basic number, basics clear
basic linear » quasi linear, basic life

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ionization instruction theory decision ((((basic nuclear) or (basic linear))) or (less linear))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ionization instruction theory decision ((((basic nuclear) OR (basic linear))) OR (less linear)).
• Adding a wildcard symbol may retrieve word variants: ionization instruction theory decision ((((basic nuclear) or (basic linear))) or (less linear))*.