Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh dan cac snippets" » "trinh dan code snippets", "trinh han cac snippets", "trinh van cac snippets", "trinh san cac snippets", "trinh dan cach snippets", "trinh dang cac snippets", "trinh dan ca 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: (((("trinh dan cac snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh dan cac snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trinh dan cac snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh dan cac snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.