Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc pham lo snippets" » "duoc pham lo snippets", "duc phan lo snippets", "duc phap lo snippets", "duc pham lao snippets", "duc pham le snippets", "duc pham mo 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 pham lo 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 pham lo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc pham lo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc pham lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.