Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan va dot snippets" » "doan va dot snippets", "khoa ma dot snippets", "nhan va dot snippets", "khoan va doc snippets", "khoan va do snippets", "khoan va doi 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: (((("khoan va dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan va dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan va dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan va dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.