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