Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co duoc cuu snippets" » "co duoc huu snippets", "co duoc luu snippets", "co duoc cuoc snippets", "tao duoc cuu snippets", "hoa duoc cuu snippets", "hoc duoc cuu 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: (((("co duoc cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co duoc cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co duoc cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co duoc cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.