Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam nhat lon snippets" » "pham nhat lon snippets", "am nhac lon snippets", "cam nhan lon snippets", "nam nhat loi snippets", "nam chat long snippets", "nam nhat linh 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: (((("nam nhat lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam nhat lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam nhat lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam nhat lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.