Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach dan so snippets" » "sach dan code snippets", "sach danh so snippets", "sach dao so snippets", "sach dat so snippets", "sach dan soc snippets", "sach dan su snippets", "sach dan mo 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: (((("sach dan 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: (((("sach dan so snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( sach dan so snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach dan so snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.