Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khop noi con snippets" » "khoa noi con snippets", "khoi noi con snippets", "hoc noi con snippets", "khop noi cong snippets", "khop nuoi con snippets", "khop noi 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: (((("python using java snippets") or ("khop noi con snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("khop noi con snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( khop noi con snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("khop noi con snippets"))) or ("locating bug code snippets"))*.