Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cay tao doan snippets" » "cay tap doan snippets", "cay tan doan snippets", "cay thai doan snippets", "cau tao doan snippets", "cai tao doan snippets", "cay cao doan 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: (((("cay tao doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cay tao doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cay tao doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cay tao doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.