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