Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"ngoc tu java slippers" » "ngoc thu java slippers", "ngon tu java slippers", "ngoc tuan java slippers", "ngoc ngu java slippers", "ngoc tu java slippery", "ngoc tu 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: (((("ngoc tu 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: (((("ngoc tu java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc tu java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc tu java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.