Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi mang cai snippets" » "do mang cai snippets", "doi khang cai snippets", "doi song cai snippets", "doi mong cai snippets", "doi mang lai snippets", "doi nang cai 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: (((("doi mang cai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi mang cai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi mang cai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi mang cai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.