Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den xua case snippets" » "den a case snippets", "den eu case snippets", "den sea case snippets", "den qua case snippets", "den xa case snippets", "den tuan case 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: (((("den xua case snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den xua case snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den xua case snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den xua case snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.