Perhaps you should try some spelling variations:
"luan tranh tu snippets" » "luan thanh tu snippets", "lan tranh tu snippets", "quan thanh tu snippets", "luan trinh tu snippets", "luan tran tu snippets", "luan tranh tu 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: (((("luan tranh tu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan tranh tu snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan tranh tu snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan tranh tu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.