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