Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam sach coc snippets" » "ngan sach coc snippets", "nam danh coc snippets", "nam sao coc snippets", "nam sach duoc snippets", "nam sach nuoc snippets", "nam sach cap 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 sach coc 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 sach coc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam sach coc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam sach coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.