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