Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"li trac du snippets" » "li rac du snippets", "vi trac du snippets", "hoi trac du snippets", "li truc du snippets", "li tac du snippets", "li tra du snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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: (((("li trac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("li trac du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( li trac du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("li trac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.