Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tu hoai toan snippets" » "tu hoa toan snippets", "tu hoach toan snippets", "tu hoai thanh snippets", "thu hoai toan snippets", "thi hoai toan 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: (((("tu hoai toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu hoai toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu hoai toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu hoai toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.