Perhaps you should try some spelling variations:
"tran thanh java snippets" » "ban thanh java snippets", "van thanh java snippets", "quan thanh java snippets", "tran thanh va snippets", "tran trinh java snippets", "tran think java snippets", "tran thanh java slippers"
"dung cau code snippets" » "dung chau code snippets", "dung cu code snippets", "dung cac code snippets", "dung cau cong snippets", "dung cau de snippets", "dung cfd code snippets", "dung cau code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("tran thanh java snippets") or ("dung cau code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran thanh java snippets") OR ("dung cau code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran thanh java snippets ) or ( dung cau code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran thanh java snippets") or ("dung cau code snippets"))) or ("locating bug code snippets"))*.