Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len tinh ho snippets" » "yen tinh ho snippets", "den tinh ho snippets", "bien tinh ho snippets", "len tinh hoc snippets", "len tinh hoa snippets", "len tinh 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: (((("len tinh 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: (((("len tinh ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len tinh ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len tinh ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.