Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh hau bo snippets" » "danh dau bo snippets", "danh cau bo snippets", "doanh chau bo snippets", "danh hau o snippets", "danh hau bong 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: (((("danh hau bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh hau bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh hau bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh hau bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.