Perhaps you should try some spelling variations:
"dang tran hang slippers" » "dang thanh hang slippers", "quang tran hang slippers", "hoang tran hang slippers", "dang tran hoang slippers", "dang tranh hang slippers", "dang tran thang slippers", "dang tran hang slippery", "dang tran hang 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 tran hang 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 tran hang slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang tran hang slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang tran hang slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.