Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thu thi cham snippets" » "thu thi code snippets", "thu thi hai snippets", "thu toc cham snippets", "thu thi ha snippets", "thuc thi cham snippets", "thu thai cham snippets", "thuy thi cham 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: (((("thu thi cham snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu thi cham snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thu thi cham snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu thi cham snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.