Perhaps you should try some spelling variations:
"trinh gian dac slippers" » "trinh giang dac slippers", "trinh giao dac slippers", "trinh giai dac slippers", "trinh gian dan slippers", "trinh gian cac slippers", "trinh giang day slippers", "trinh gian dac slippery", "trinh gian dac grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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 java java snippets") or ("trinh gian dac slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trinh gian dac slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh gian dac slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh gian dac slippers"))) or ("locating bug code snippets"))*.