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