Perhaps you should try some spelling variations:
"cong tran quoc snippets" » "cong tan quoc snippets", "cong tuan quoc snippets", "cong toan quoc snippets", "cong trung quoc snippets", "cong han quoc snippets", "cong tran duc snippets", "cong tran quoc 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: (((("cong tran quoc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong tran quoc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tran quoc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tran quoc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.