Perhaps you should try some spelling variations:
"dang quang tran slippers" » "dung quang tran slippers", "nang quan tran slippers", "dang hung tran slippers", "dang quang tuan slippers", "dang quang trung slippers", "dang quang thanh slippers", "dang quang tran slippery", "dang quang tran 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: (((("dang quang tran slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang quang tran slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang quang tran slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang quang tran slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.