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