Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"huong ly do snippets" » "chuong my do snippets", "phuong la do snippets", "vuong le do snippets", "huong ly dao snippets", "huong ly doi snippets", "huong ly du 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 ("huong ly do snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("huong ly do snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( huong ly do snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("huong ly do snippets"))) or ("locating bug code snippets"))*.