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