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