Perhaps you should try some spelling variations:
"trinh quan dac slippers" » "tinh quang dac slippers", "trinh luat dac slippers", "trinh han dac slippers", "trinh luan dac slippers", "trinh quan doc slippers", "trinh quan doan slippers", "trinh quan dac slippery", "trinh quan 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 quan 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 quan dac slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh quan dac slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh quan dac slippers"))) or ("locating bug code snippets"))*.