Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dang quang du snippets" » "dang quang code snippets", "dung quang du snippets", "nang quan du snippets", "dang hung du snippets", "dang quang duc snippets", "dang quang duy snippets", "dang quang cu 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: (((("dang quang du snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang quang du snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dang quang du snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang quang du snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.