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