Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using dao dong snippets" » "using data dong snippets", "using a dong snippets", "using two dong snippets", "using lao dong snippets", "using ha dong snippets", "using bat dong snippets"
"dung java java snippets" » "dung va java snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using dao dong snippets") or ("dung java java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using dao dong snippets") OR ("dung java java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using dao dong snippets ) or ( dung java java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using dao dong snippets") or ("dung java java snippets"))) or ("locating bugs code snippets"))*.