Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan dan soc snippets" » "phan dan code snippets", "phan dang soc snippets", "phan dau soc snippets", "nhan dan soc snippets", "phan dan toc snippets", "phan dan hoc snippets", "phan dan so 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 dan soc 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 dan soc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan dan soc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan dan soc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.