Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung ngo da snippets" » "dung ngon da snippets", "dong ngo da snippets", "dung nga da snippets", "dung ngo dac snippets", "dung go da snippets", "dung ngo ha 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: (((("dung ngo da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ngo da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ngo da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ngo da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.