Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan van ton snippets" » "phan van code snippets", "pham van ton snippets", "thanh van ton snippets", "luan van ton snippets", "phan van toan snippets", "phan van tan snippets", "phan van toi snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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

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