Perhaps you should try some spelling variations:
"dusing java java snippets" » "using java java snippets"
"tu trinh java slippers" » "tu tinh java slippers", "tieu trinh java slippers", "qua trinh java slippers", "tu trinh java slippery", "tu trinh 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: (((("tu trinh java slippers") or ("dusing java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu trinh java slippers") OR ("dusing java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu trinh java slippers ) or ( dusing java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu trinh java slippers") or ("dusing java java snippets"))) or ("locating bug code snippets"))*.