Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam cau doi snippets" » "nam cao doi snippets", "nam cac doi snippets", "nam ca doi snippets", "nam cau hoi snippets", "nam cau do snippets", "nam cau noi 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 cau doi 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 cau doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam cau doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam cau doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.