Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hoa du snippets" » "dong hoa du snippets", "dong hoc du snippets", "hang hoa du snippets", "cong hoa dau snippets", "cong hoa lu snippets", "cong hoa 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 hoa du 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 hoa du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hoa du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hoa du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.