Perhaps you should try some spelling variations:
"dong cach phap slippers" » "dong cac phap slippers", "dong bach phap slippers", "phong cach phap slippers", "dong cach pha slippers", "dong cach phat slippers", "dong sach phap slippers", "dong cach phap slippery", "dong cach phap 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: (((("dong cach phap slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cach phap slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cach phap slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cach phap slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.