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