Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat giao do snippets" » "thuat giao do snippets", "xuat giai do snippets", "luat gia do snippets", "luat giac do snippets", "luat giao o 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: (((("luat giao do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luat giao do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat giao do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat giao do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.