Perhaps you should try some spelling variations:
"duong cac thin slippers" » "luong cac thin slippers", "dung cac thin slippers", "cuong cac thin slippers", "duong cac thi slippers", "duong cach thien slippers", "duong cac chien slippers", "duong cac thin slippery", "duong cac thin 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: (((("duong cac thin slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong cac thin slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong cac thin slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong cac thin slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.