Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai long son snippets" » "hai phong son snippets", "hai duong son snippets", "hai lang son snippets", "hai dong son snippets", "hai hong son 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: (((("hai long son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai long son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai long son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai long son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.