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