Perhaps you should try some spelling variations:
"doi nguoi java snippets" » "doi nguoi va snippets", "doi ngu java snippets", "doi nguoi bana snippets", "moi nguoi java snippets", "cuoi nguoi java snippets", "con nguoi java snippets", "doi nguoi java slippers"
"using java java snippets" » "using data java snippets", "using java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("doi nguoi java snippets") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi nguoi java snippets") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi nguoi java snippets ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi nguoi java snippets") or ("using java java snippets"))) or ("locating bug code snippets"))*.