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