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