Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc giai cac snippets" » "duc gia cac snippets", "duc giao cac snippets", "nuoc giai cac snippets", "duc gian cac snippets", "duc giai ca snippets", "duc giai bai 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: (((("duc giai cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc giai cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc giai cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc giai cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.