Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi duc con snippets" » "pham duc con snippets", "phan duc con snippets", "chi duoc con snippets", "phi duc cong snippets", "phi duc ton snippets", "phi duc cuong 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: (((("phi duc con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi duc con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi duc con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi duc con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.