Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"bua van toan snippets" » "bua van code snippets", "bua van tuan snippets", "bua van tan snippets", "bua van thanh snippets", "bui van toan snippets", "qua van toan snippets", "bua va toan 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: (((("bua 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: (((("bua van toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( bua van toan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bua van toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.