Perhaps you should try some spelling variations:
"viet luong tu snippets" » "viet huong tu snippets", "viet cuong tu snippets", "viet muong tu snippets", "viet luong tai snippets", "viet luong thi snippets", "viet luong tin snippets", "viet luong tu slippers"
"using java java snippets" » "using data java snippets", "using java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("viet luong tu snippets") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet luong tu snippets") OR ("using java java snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( viet luong tu snippets ) or ( using java java snippets ))) or ( locating bug code snippets ))*.