Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kiem pha du snippets" » "diem phan du snippets", "kiem tra du snippets", "kham pha du snippets", "kiem pham duc snippets", "kiem pham duy snippets", "kiem phan duc 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: (((("kiem pha 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: (((("kiem pha du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kiem pha du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kiem pha du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.