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