Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan hanh dot snippets" » "dang hanh dot snippets", "dan khanh dot snippets", "dan thanh dot snippets", "dan hanh tot snippets", "dan hanh mot snippets", "dan hanh dong 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: (((("dan hanh dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan hanh dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hanh dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hanh dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.