Perhaps you should try some spelling variations:
"duong anh trac slippers" » "duong manh trac slippers", "duong xanh trac slippers", "duong vanh trac slippers", "duong sinh trac slippers", "duong anh tuan slippers", "duong anh thuc slippers", "duong anh trac slippery", "duong anh 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: (((("duong anh 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: (((("duong anh trac slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong anh trac slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong anh trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.