Perhaps you should try some spelling variations:
"dao dong chen snippets" » "dao dong code snippets", "dao dong chan snippets", "dao dong che snippets", "dao dong chuyen snippets", "lao dong chen snippets", "ha dong chen snippets", "bat dong chen snippets"
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data 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 java java snippets") or ("dao dong chen snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java java snippets") OR ("dao dong chen snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( dao dong chen snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") or ("dao dong chen snippets"))) or ("locating bug core snippets"))*.