Perhaps you should try some spelling variations:
"doi nguoi java slippers" » "doi nguoi va slippers", "doi ngu java slippers", "doi nguoi bana slippers", "moi nguoi java slippers", "cuoi nguoi java slippers", "con nguoi java slippers", "doi nguoi java slippery", "doi nguoi java grippers"
"using java java snippets" » "using data 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: (((("doi nguoi 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: (((("doi nguoi java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi nguoi java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi nguoi java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.