Perhaps you should try some spelling variations:
"arqueologia publicidad digital" » "arqueologia aplicada digital", "arqueologia unidad digital", "ecologia publicidad digital"
"arqueologia historia militar" » "tecnologia historia militar", "arqueologia historia familiar", "arqueologia historia digital", "arqueologia justicia militar"
"arqueologia publica digital" » "arqueologia publica distrital", "arqueologia justicia digital", "arqueologia publica dirigida"

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: (("arqueologia historia militar") or ((("arqueologia publica digital") OR ("arqueologia publicidad digital"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("arqueologia historia militar") OR ((("arqueologia publica digital") OR ("arqueologia publicidad digital")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"arqueologia historia militar\") or (((\"arqueologia publica digital\") OR (\"arqueologia publicidad digital\"))))".
• Removing quotes may allow a broader search: (( arqueologia historia militar ) or ((( arqueologia publica digital ) OR ( arqueologia publicidad digital )))).
• Adding a wildcard symbol may retrieve word variants: (("arqueologia historia militar") or ((("arqueologia publica digital") OR ("arqueologia publicidad digital"))))*.