Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung cac danh slippers" » "luong cac danh slippers", "dung cho danh slippers", "dung tai danh slippers", "dung cac doanh slippers", "dung cac dan slippers", "dung cac dang slippers", "dung cac danh slippery", "dung cac danh grippers"
"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 cac danh slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cac danh slippers") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cac danh slippers ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cac danh slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))*.