Perhaps you should try some spelling variations:
"trong danh hieu snippets" » "trong doanh hieu snippets", "truong danh hieu snippets", "trong anh hieu snippets", "trong manh hieu snippets", "trong dinh hieu snippets", "trong danh hieu 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: (((("trong danh hieu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong danh hieu snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong danh hieu snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong danh hieu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.