Try to make your search as simple as possible:
Silver will find all items including that sequence of letters.
Search results for "Silver":
"Cineraria maritima Silver Dust" - Senecio cineraria Silver Dust
"Eucalyptus pleurocarpa (silver" - Eucalyptus tetragona c.s.
"Silver Peacock Kaempferia" - Kaempferia atrovirens