Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban minh ho snippets" » "van minh ho snippets", "ban tinh ho snippets", "ban linh ho snippets", "ban minh hoa snippets", "ban minh hon snippets", "ban minh cho 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: (((("ban minh ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban minh ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban minh ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban minh ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.