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