Potser podríeu intentar variants ortogràfiques:
communication conversion » communication conversation, communications convention, communication cohesion
conversion based » conversion del, conversion a, converter based
based discussion » brief discussion
from wastes » from waste, from water, from western
food wastes » food waste, wood waste, solid wastes
from wave » from waves, from cave, from wage

Pot obtenir més resultats si ajusta la seva cerca.

• Executant una cerca difusa por obtener resultaste amo pararles similares: communication conversion based discussion ((from wave) or (((from wastes) OR (food wastes))))~.
• Si vols fer servir operadors booleans, han d'estar en majúscules: communication conversion based discussion ((from wave) OR (((from wastes) OR (food wastes)))).
• Les paraules AND, OR i NOT poden confondre la cerca; provi d'afegir cometes: "communication conversion based discussion ((from wave) or (((from wastes) OR (food wastes))))".
• Afegint truncament pot recuperar més registres: communication conversion based discussion ((from wave) or (((from wastes) OR (food wastes))))*.