Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac phan o2 snippets" » "cac nhan o2 snippets", "cao phan o2 snippets", "cap phan o2 snippets", "cac phan o snippets", "cac phan hoa snippets", "cac phan bon 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: (((("cac phan o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac phan o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac phan o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac phan o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.