Perhaps you should try some spelling variations:
"phan duoc trinh slippers" » "phan doc trinh slippers", "phan quoc thinh slippers", "phan duoc tren slippers", "phan duc trinh slippers", "phan quoc trinh slippers", "nhan duoc trinh slippers", "phan duoc trinh slippery", "phan duoc trinh 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 ("phan duoc trinh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("phan duoc trinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( phan duoc trinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("phan duoc trinh slippers"))) or ("locating bug code snippets"))*.