Perhaps you should try some spelling variations:
"hang luong java snippets" » "nang luong java snippets", "hang thuong java snippets", "hoang vuong java snippets", "hang luong va snippets"
"using cfd code slippers" » "using 3d code slippers", "using c code slippers"
"locating bug code 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: (((("using cfd code slippers") or ("hang luong java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using cfd code slippers") OR ("hang luong java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using cfd code slippers ) or ( hang luong java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using cfd code slippers") or ("hang luong java snippets"))) or ("locating bug code snippets"))*.