Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat van cung snippets" » "dat van cuong snippets", "dat van dung snippets", "dat van hung snippets", "dao van cung snippets", "dat va cung snippets", "dam van cung 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 van cung 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 van cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat van cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat van cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.