Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"doan cap da snippets" » "doanh cao da snippets", "dan ca da snippets", "toan cao da snippets", "doan cap do snippets", "doan cap va snippets", "doan ca da snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: (((("using java code snippets") or ("doan cap da snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("doan cap da snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( doan cap da snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("doan cap da snippets"))) or ("locating bug code snippets"))*.