Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan thiet do snippets" » "luan thiet do snippets", "toan thiet do snippets", "doan thien do snippets", "dan nhiet do snippets", "dan thiet de snippets", "dan nhiet doi 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: (((("dan thiet 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: (((("dan thiet do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thiet do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thiet do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.