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