Perhaps you should try some spelling variations:
"dung cua thuoc snippets" » "dung nha thuoc snippets", "dung cay thuoc snippets", "dung cua nuoc snippets", "dung luan thuoc snippets", "dung cho thuoc snippets", "dung cua thuoc 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 cua thuoc 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 cua thuoc snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cua thuoc snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cua thuoc snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.