Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat quoc son snippets" » "dat nuoc son snippets", "dat duoc son snippets", "dan quoc son snippets", "dat cuoc song snippets", "dat nuoc song snippets", "dat quoc toan 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: (((("dat quoc 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: (((("dat quoc son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat quoc son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat quoc son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.