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