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