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