Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"zhan mao con snippets" » "zhan gao con snippets", "nhan mo con snippets", "phan may con snippets", "zhan tao con snippets", "zhan mao can snippets", "zhan sao con 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: (((("zhan mao con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("zhan mao con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( zhan mao con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("zhan mao con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.