Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc doi hoi snippets" » "duc dai hoi snippets", "duc loi hoi snippets", "luc doi hoi snippets", "duc doi thoi snippets", "duc doi voi snippets", "duc doi moi 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: (((("duc doi hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc doi hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc doi hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc doi hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.