Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"khoa hoi java slippers" » "khoan hoi java slippers", "khoa hoc java slippers", "khoa doi java slippers", "khoa hoi va slippers", "khoa hoi java slippery", "khoa hoi 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: (((("khoa hoi 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: (((("khoa hoi java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa hoi java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa hoi java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.