Perhaps you should try some spelling variations:
"hang hoa robot snippets" » "hang cho robot snippets", "hang a robot snippets", "hang so robot snippets", "hang khoa robot snippets", "thanh hoa robot snippets", "hang va robot snippets", "hang hoa robot slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("hang hoa robot snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang hoa robot snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang hoa robot snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang hoa robot snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.