Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa diem co snippets" » "khoa dieu co snippets", "thoi diem co snippets", "hoa dien co snippets", "khoa diem c snippets", "khoa diem ca 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 diem 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 diem co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa diem co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa diem co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.