Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac han cua snippets" » "cac nhan cua snippets", "cac phan cua snippets", "cac dan cua snippets", "cac hang cua snippets", "cac than 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: (((("cac han 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: (((("cac han cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac han cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac han cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.