Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan dau du snippets" » "phan tu du snippets", "hang dau du snippets", "phan dau tu snippets", "phan day du snippets", "phan dao du 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 dau du 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 dau du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan dau du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan dau du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.