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