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