Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuoc su cac snippets" » "thuoc tu cac snippets", "thuc su cac snippets", "thuoc so cac snippets", "thuoc su cao snippets", "thuoc su can 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: (((("thuoc su cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuoc su cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuoc su cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuoc su cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.