Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc du cau snippets" » "ngoc duc cau snippets", "ngoc de cau snippets", "ngoc tu cau snippets", "ngoc cu cau snippets", "ngoc da cau snippets", "ngoc di cau 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: (((("ngoc du cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngoc du cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc du cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc du cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.