Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"khoa tap java slippers" » "khoa tai java slippers", "khoa than java slippers", "hoc tap java slippers", "khoa tap va slippers", "khoa tap java slippery", "khoa tap java grippers"

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 tap java slippers") or ("using java java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa tap java slippers") OR ("using java java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( khoa tap java slippers ) or ( using java java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa tap java slippers") or ("using java java snippets"))) or ("locating bugs code snippets"))*.