Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang cai lon snippets" » "nang cao lon snippets", "nang tai lon snippets", "nang cap lon snippets", "nang bai lon snippets", "nang lai lon snippets", "nang hai long 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 cai lon 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 cai lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang cai lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang cai lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.