Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using danh cau snippets" » "using danh code snippets", "sinh danh cau snippets", "song danh cau snippets", "using data cau snippets", "using danh dau snippets", "using danh ca snippets", "using danh hau snippets"
"dung java java snippets" » "dung va java 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 danh cau snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using danh cau snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using danh cau snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using danh cau snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.