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