Try to make your search as simple as possible:
Nolina will find all items including that sequence of letters.
Search results for "Nolina":
"Nolina guatemalensis" - Beaucarnea guatemalensis
"Nolina recurvata" - Beaucarnea recurvata c.s.
"Nolina tuberculata" - Beaucarnea recurvata c.s.