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