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