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