Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc phan cuc snippets" » "duc phan code snippets", "dung phan cuc snippets", "duc thang cuc snippets", "duc phung cuc snippets", "duc phan duc snippets", "duc phan cac snippets", "duc pham cuc 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: (((("duc phan cuc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc phan cuc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( duc phan cuc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc phan cuc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.