Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"when con cua snippets" » "when can cua snippets", "len con cua snippets", "nhan con cua snippets", "when cong cua snippets", "when co cua snippets", "when dong 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: (((("when con 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: (((("when con cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( when con cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when con cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.