Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan duc doi snippets" » "phan duc code snippets", "pham duc doi snippets", "phan tu doi snippets", "phan dau doi snippets", "phan duc dai snippets", "phan duc loi snippets", "phan luc doi 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 duc doi 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 duc doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan duc doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan duc doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.