Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xac che hoat snippets" » "xac che khoa snippets", "xac cao hoat snippets", "xac co hoat snippets", "cac che hoat snippets", "sach che hoat 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 che hoat 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 che hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xac che hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xac che hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.