Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan dieu doi snippets" » "dang dieu doi snippets", "doan dieu doi snippets", "da dieu doi snippets", "dan dieu moi snippets", "dan lieu doi snippets", "dan dieu tuoi 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 dieu doi 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 dieu doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan dieu doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan dieu doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.