Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu cuu chat snippets" » "ngu cuu phat snippets", "ngu cao chat snippets", "ngu cuu che snippets", "ngu cu chat snippets", "ngu cau chat snippets", "ngu cua chat 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 cuu chat 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 cuu chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu cuu chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu cuu chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.