Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"thanh van java slippers" » "thanh san java slippers", "thanh toan java slippers", "thanh phan java slippers", "thanh van java slippery", "thanh van 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: (((("thanh van 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: (((("thanh van java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thanh van java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thanh van java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.