Try to make your search as simple as possible:
Dinebra will find all items including that sequence of letters.
Search results for "Dinebra":
"Dinebra aristidoides" - Bouteloua aristidoides
"Dinebra bromoides" - Bouteloua radicosa
"Dinebra chloridea" - Enteropogon chlorideus
"Dinebra chondrosioides" - Bouteloua chondrosioides
"Dinebra repens" - Bouteloua repens