Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phuc cua don snippets" » "thuc cua don snippets", "hoc cua don snippets", "phuc vu don snippets", "phuc cua dong snippets", "phuc cua dan snippets", "phuc cua con 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: (((("phuc cua don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phuc cua don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phuc cua don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phuc cua don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.