Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan tan so snippets" » "phan tan code snippets", "phan van so snippets", "phan tap so snippets", "phan lan so snippets", "phan tan soi snippets", "phan tan son snippets", "phan than 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 tan so 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 tan so snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan tan so snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan tan so snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.