Perhaps you should try some spelling variations:
"dung lieu voi snippets" » "dung hieu voi snippets", "dung tieu voi snippets", "dung viet voi snippets", "dung lieu boi snippets", "dung lieu va snippets", "dung lieu hoc snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 lieu voi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung lieu voi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lieu voi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lieu voi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.