Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"giang van cua snippets" » "giang van code snippets", "hoang van cua snippets", "dang van cua snippets", "gian dan cua snippets", "giang vang cua snippets", "giang ban cua snippets", "giang dan cua 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 ("giang van 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 ("giang van cua snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( giang van cua snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("giang van cua snippets"))) or ("locating bug core snippets"))*.