Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"luat du java slippers" » "luat dau java slippers", "luat su java slippers", "luat tu java slippers", "luat ngu java slippers", "luat du java slippery", "luat du 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: (((("luat du 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: (((("luat du java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat du java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat du java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.