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