Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc nhan con snippets" » "doc nhanh con snippets", "dac nhan con snippets", "doi nhan con snippets", "doc nhan co snippets", "doc nhanh cong snippets", "doc phan cong 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: (((("doc nhan 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: (((("doc nhan con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc nhan con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc nhan con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.