Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan thi cho snippets" » "phan thi code snippets", "pham thi cho snippets", "tran thi cho snippets", "phan tu cho snippets", "phan thi choi snippets", "phan thi tho snippets", "phan thi thao 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 thi cho 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 thi cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan thi cho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan thi cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.