Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc dan toi snippets" » "duc dan toi snippets", "duoc ban toi snippets", "duoc dai toi snippets", "duoc dan toc snippets", "duoc dan thi snippets", "duoc van toi 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: (((("duoc dan toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc dan toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc dan toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc dan toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.