Perhaps you should try some spelling variations:
"duong java java slippers" » "duong va java slippers", "duong java java slippery", "duong java java grippers"
"cuong ve code snippets" » "cuong vo code snippets", "duong ve code snippets", "luong va code snippets", "cuong ve core snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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 java java slippers") or ("cuong ve code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong java java slippers") OR ("cuong ve code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong java java slippers ) or ( cuong ve code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong java java slippers") or ("cuong ve code snippets"))) or ("locating bug code snippets"))*.