Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hai da snippets" » "cong thai da snippets", "cong ha da snippets", "hoang hai da snippets", "cong hai dan snippets", "cong hai ba snippets", "cong hai va 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 hai da 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 hai da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hai da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hai da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.