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