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