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