Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc tu cao snippets" » "ngoc thu cao snippets", "ngon tu cao snippets", "ngoc tuan cao snippets", "ngoc cu cao snippets", "ngoc tu cac snippets", "ngoc vu cao 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 tu 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: (((("ngoc tu cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc tu cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc tu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.