Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung van don snippets" » "dung van code snippets", "duong van don snippets", "dung va don snippets", "dang van don snippets", "dung van dong snippets", "dung van doan snippets", "dung van dan snippets"
"python using java snippets" » "python using data snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") OR ("dung van don snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java snippets\") OR (\"dung van don snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( dung van don snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("dung van don snippets"))) OR ("locating bug core snippets"))*.