Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc noi cong snippets" » "doc nguoi cong snippets", "doc tai cong snippets", "doc thi cong snippets", "duoc noi cong snippets", "hoc noi cong snippets", "doi noi 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 noi cong 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 noi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc noi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc noi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.