Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa ban da snippets" » "khoa bai da snippets", "khoa can da snippets", "khoe ban da snippets", "khoa ban dan snippets", "khoa ban dau snippets", "khoa ban dac 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: (((("python using java snippets") or ("khoa ban da snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("khoa ban da snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( khoa ban da snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("khoa ban da snippets"))) or ("locating bug code snippets"))*.