Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong lang che snippets" » "cong lang code snippets", "cong vang che snippets", "cong luong che snippets", "cong quang che snippets", "cong sang che snippets", "cong bang che snippets", "cong lang chu 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 lang 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 lang che snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong lang che snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong lang che snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.