Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tran quoc cac snippets" » "tran quoc code snippets", "trung quoc cac snippets", "han quoc cac snippets", "tran duc cac snippets", "tran duoc cac snippets", "tran luoc cac snippets", "tran quoc cao 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: (((("tran quoc 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: (((("tran quoc cac snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tran quoc cac snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran quoc cac snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.