Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa cua cao snippets" » "hoa cua cao snippets", "kho cua cao snippets", "khoe cua cao snippets", "khoa cua cac snippets", "khoa cu cao snippets", "khoa cua cay 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 cua cao 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 cua cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa cua cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa cua cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.