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