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