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