Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cot phap cau snippets" » "cot thep cau snippets", "hoc phap cau snippets", "dot pha cau snippets", "cot phan cau snippets", "cot pha cau snippets", "cot phap ca 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: (((("cot phap cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cot phap cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cot phap cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cot phap cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.