Perhaps you should try some spelling variations:
"va dung open snippets" » "va dung code snippets", "va dung tren snippets", "va dung nen snippets", "va dung len snippets", "van dung open snippets", "va duong open snippets", "vat dung open 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 dung open 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 dung open snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( va dung open snippets ) or ( using java java snippets ))) or ( locating bug core snippets ))*.