Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mem chon cu snippets" » "hiem chon cu snippets", "mem cong cu snippets", "mo chon cu snippets", "mem chon chu snippets", "mem cho cu snippets", "mem chon tu 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: (((("mem chon cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mem chon cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mem chon cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mem chon cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.