אולי כדאי לנסות איות אחר או כתיב מלא:
cognition instruction » cognition interactions, education instruction, cognitive interaction
instruction theory » introduction theory, institutional theory
theory revision » theory decision, theory revisited, theory session
basics linear » based linear, basics clear
basic linear » quasi linear, basic life

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• Performing a fuzzy search may retrieve terms with similar spellings: cognition instruction theory revision ((((basics linear) or (basic linear))) or (less linear))~.
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