Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong dung che snippets" » "cong dung code snippets", "cuong dung che snippets", "cong dong che snippets", "cong luong che snippets", "cong dung chet snippets", "cong duong che snippets", "cong dung cho 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 dung che 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 dung che snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong dung che snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dung che snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.