Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"giao toan do snippets" » "giao thanh do snippets", "giai doan do snippets", "giao nhan do snippets", "giao toan ho snippets", "giao toan co snippets", "giao toan du 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: (((("giao toan 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: (((("giao toan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( giao toan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("giao toan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.