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