Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"data using java snippets" » "data using data snippets"
"dung van phan snippets" » "duong van phan snippets", "dung va phan snippets", "dang van phan snippets", "dung van phong snippets", "dung van thanh snippets", "dung luan phan snippets"

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

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