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