Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nong ngu du snippets" » "song ngu du snippets", "cong ngu du snippets", "nong nghi du snippets", "nong ngu cu snippets", "nong ngu tu snippets", "nong ngu dung 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: (((("nong ngu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nong ngu du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nong ngu du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nong ngu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.