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