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