Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den hoc cap snippets" » "dien hoc cap snippets", "dan hoc cap snippets", "de hoc cap snippets", "den hoc cao snippets", "den hoc tap snippets", "den hoc cac 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 hoc cap 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 hoc cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den hoc cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den hoc cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.