Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang co do snippets" » "nang cao do snippets", "nang doc do snippets", "nang hoc do snippets", "nang co dot snippets", "nang co don snippets", "nang co 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 co do 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 co do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang co do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang co do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.