Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong van choi snippets" » "dong van code snippets", "duong van choi snippets", "dang van choi snippets", "dong von choi snippets", "dong van chi snippets", "dong van cho snippets", "dong san choi 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 ("dong van choi snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dong van choi snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dong van choi snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dong van choi snippets"))) or ("locating bug core snippets"))*.