Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gia duc cua snippets" » "giao duc cua snippets", "gia muc cua snippets", "gia thuc cua snippets", "gia doc cua snippets", "gia luc cua snippets", "gia tuc 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: (((("gia duc 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: (((("gia duc cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gia duc cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gia duc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.