Potser podríeu intentar variants ortogràfiques:
operation instrumentation » applications instrumentation, therapy instrumentation, modern instrumentation
https division » fats division
basis linear » basics linear, basic linear, bases linear
based linear » basic linear, based nonlinear, based library
class linear » less linear, mass linear, class library

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• Executant una cerca difusa por obtener resultaste amo pararles similares: operation instrumentation https division ((((basis linear) or (based linear))) or (class linear))~.
• Si vols fer servir operadors booleans, han d'estar en majúscules: operation instrumentation https division ((((basis linear) OR (based linear))) OR (class linear)).
• Afegint truncament pot recuperar més registres: operation instrumentation https division ((((basis linear) or (based linear))) or (class linear))*.