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