Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam ngan c snippets" » "nam nganh c snippets", "nam ngang c snippets", "nam ngay c snippets", "nam gan c snippets", "nam nganh co snippets", "nam ngan bac 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 ngan c 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 ngan c snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam ngan c snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam ngan c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.