Perhaps you should try some spelling variations:
anejos » anejo (Expand Search)
boces » bones (Expand Search), oces (Expand Search), boce (Expand Search)
xxiii » xiii (Expand Search), xxii (Expand Search)
xxxiiii » xxiiii (Expand Search), xxxiii (Expand Search)
xviii » xiii (Expand Search), viii (Expand Search), xvii (Expand Search), xviiii (Expand Search), xxviii (Expand Search)
xiiii » xiii (Expand Search)
xxxvii » xxxviii (Expand Search), xxxxvii (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 ((xvi or ((xxiii or (xviii or xiiii)) or (xxxvii or xxxiiii))) or vii)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: anejos del boces ((xvi OR ((xxiii OR (xviii OR xiiii)) OR (xxxvii OR xxxiiii))) OR vii).
• Adding a wildcard symbol may retrieve word variants: anejos del boces ((xvi or ((xxiii or (xviii or xiiii)) or (xxxvii or xxxiiii))) or vii)*.