Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hao van toan snippets" » "hao van code snippets", "hao van tuan snippets", "hao van tan snippets", "hao van thanh snippets", "dao van toan snippets", "ho van toan snippets", "cao van toan 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: (((("hao van toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hao van toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hao van toan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao van toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.