Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa xa cao snippets" » "hoa xa cao snippets", "khoa ma cao snippets", "khoa x cao snippets", "khoa va cao snippets", "khoa ca cao 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 xa cao 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 xa cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa xa cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa xa cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.