Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa than co snippets" » "khoa luan co snippets", "hoa thai co snippets", "hoa tan co snippets", "khoa toan co snippets", "khoa phan co snippets", "khoa than vo 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 than co 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 than co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa than co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa than co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.