Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"giang nhat cac snippets" » "tieng nhat cac snippets", "dang nhat cac snippets", "giang nhi cac snippets", "giang nhan cach snippets", "giang nhat ban snippets", "giang nhat cua 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 ("giang nhat cac snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("giang nhat cac snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( giang nhat cac snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("giang nhat cac snippets"))) or ("locating bug code snippets"))*.