Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi cong de snippets" » "thi cong de snippets", "phan cong de snippets", "pham cong de snippets", "phi cong da snippets", "phi cong ve snippets", "phi cong dieu 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 cong de 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 cong de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi cong de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi cong de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.