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