Perhaps you should try some spelling variations:
"hoang xanh trac slippers" » "hoang anh trac slippers", "hoang van trac slippers", "hoang minh trac slippers", "hoang canh tac slippers", "hoang sinh trac slippers", "hoang xanh trac slippery", "hoang xanh trac 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: (((("hoang xanh trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoang xanh trac slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoang xanh trac slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang xanh trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.