Perhaps you should try some spelling variations:
"dung hoc chieu snippets" » "dung hoc code snippets", "dung hoc thieu snippets", "dung ho chieu snippets", "dung hoc hien snippets", "dong hoc chieu snippets", "dung thuoc chieu snippets", "trung hoc chieu snippets"
"locating bug core snippets" » "locating bug code 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 ("dung hoc chieu snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung hoc chieu snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung hoc chieu snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung hoc chieu snippets"))) or ("locating bug core snippets"))*.