Perhaps you should try some spelling variations:
anejos » anejo (Expand Search)
boces » bones (Expand Search), oces (Expand Search), boce (Expand Search)
xviii » xiii (Expand Search), viii (Expand Search), xvii (Expand Search), xviiii (Expand Search), xxviii (Expand Search)
xxxviiii » xxxiiii (Expand Search), xxviiii (Expand Search), xxxviii (Expand Search), xxxviiiii (Expand Search), xxxxviiii (Expand Search)
xxvii » xvii (Expand Search), xxii (Expand Search), xxviii (Expand Search), xxxvii (Expand Search)
xxiii » xiii (Expand Search), xxii (Expand Search)
vii » viii (Expand Search), xvii (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: anejos del boces ((xviii or (xxvii or ((xxiii or xxiii) or xxxviiii))) or (vii or xvi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: anejos del boces ((xviii OR (xxvii OR ((xxiii OR xxiii) OR xxxviiii))) OR (vii OR xvi)).
• Adding a wildcard symbol may retrieve word variants: anejos del boces ((xviii or (xxvii or ((xxiii or xxiii) or xxxviiii))) or (vii or xvi))*.