Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc co cua snippets" » "duoc co cua snippets", "doc cao cua snippets", "hoc co cua snippets", "doc con cua snippets", "doc ca cua snippets", "doc cong cua 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: (((("doc co cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc co cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc co cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc co cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.