Perhaps you should try some spelling variations:
"programasming languages classification methods." » "programasming language versification methods.", "programasming algae classification methods.", "programasming guinea classification methods.", "programming languages classification methods."
"programas language classical methods." » "program language classical methods.", "programming languages classical methods.", "programas language classical period.", "programas language classical myth."

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: (("programas language classical methods.") or ("programasming languages classification methods."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("programas language classical methods.") OR ("programasming languages classification methods.")).
• Removing quotes may allow a broader search: (( programas language classical methods. ) or ( programasming languages classification methods. )).
• Adding a wildcard symbol may retrieve word variants: (("programas language classical methods.") or ("programasming languages classification methods."))*.