Tal vez debería intentar con algunas variantes ortográficas:
"Plant growth promotional material" » "Plant growth educational material", "Plant growth promotional model", "Plant growth protection material", "Plant growth promotion material"
"Plant growth promoting material" » "Plant growth promoting bacteria", "Plant growth roofing material", "Plant growth writing material", "Plant growth promotion material", "Plant growth promoters material", "Plant health promoting material"
"Plant growth promoter material" » "Plant growth outer material", "Plant growth promoters material", "Plant growth promotion material", "Plant growth premature material"

Puede conseguir más resultados ajustando la consulta de búsqueda.

• Las palabras AND, OR y NOT pueden confundir la búsqueda; intente con comillas: "((((\"Plant growth promoting material\") OR (\"Plant growth promotional material\"))) OR (\"Plant growth promoter material\"))".
• Eliminando comillas puede permitir una búsqueda más amplia: (((( Plant growth promoting material ) OR ( Plant growth promotional material ))) OR ( Plant growth promoter material )).
• Agregando un comodín puede recuperar variantes de palabras: (((("Plant growth promoting material") OR ("Plant growth promotional material"))) OR ("Plant growth promoter material"))*.