Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang co c1 snippets" » "nang cao c1 snippets", "nang doc c1 snippets", "nang hoc c1 snippets", "nang co co snippets", "nang co cr snippets", "nang co 1 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 c1 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 c1 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang co c1 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang co c1 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.