Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc can song snippets" » "duc can dong snippets", "duc cau song snippets", "duc con song snippets", "duc tan song snippets", "duy can song snippets", "duc van song 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: (((("duc can song snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc can song snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc can song snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc can song snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.