Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang le do snippets" » "tang le do snippets", "dung le do snippets", "dang de do snippets", "dang ke do snippets", "dang le co snippets", "dang le d 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: (((("dang le do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang le do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang le do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang le do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.