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