Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung va ten slippers" » "dung va tien slippers", "dung va den slippers", "dung va tin slippers", "dung va ten slippery", "dung va ten grippers"
"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 va ten slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung va ten slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung va ten slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung va ten slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.