Perhaps you should try some spelling variations:
"tecnica education parent." » "technical education parent.", "tecnica educativa parent.", "tecnicas educativas parent.", "tecnica education spain.", "tecnica educacion para.", "tecnica education peru."
"tecnica education latin." » "technical education latin.", "tecnica educativa latin.", "tecnicas educativas latin.", "tecnica education spain."
"tecnica education urban." » "technical education urban.", "tecnica educativa urban.", "tecnicas educativas urban.", "tecnica educacion urbana.", "tecnica education cuba."

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