Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan dang o2 snippets" » "phan dau o2 snippets", "phan cong o2 snippets", "nhan dan o2 snippets", "phan dang o snippets", "phan hang o2 snippets", "phan dang noi 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: (((("phan dang 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: (((("phan dang o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan dang o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan dang o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.