Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi thao cho snippets" » "thi thanh cho snippets", "thi thu cho snippets", "thi thuy cho snippets", "thi tao cho snippets", "thi thao khoa snippets", "thi chao chao 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: (((("thi thao cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi thao cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi thao cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi thao cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.