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