Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tran quoc cua snippets" » "tran quoc code snippets", "trung quoc cua snippets", "han quoc cua snippets", "tran duc cua snippets", "tran nuoc cua snippets", "tran quoc quan snippets", "tran quoc chan 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: (((("dung java java snippets") or ("tran quoc cua snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("tran quoc cua snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( tran quoc cua snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("tran quoc cua snippets"))) or ("locating bug core snippets"))*.