Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khau dan co snippets" » "khau luan co snippets", "khao danh co snippets", "nhan dan co snippets", "khau dan cho snippets", "khau dang co snippets", "khau danh co 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: (((("khau dan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khau dan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khau dan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khau dan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.