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