Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu cuc do snippets" » "thi cuc do snippets", "thu tuc do snippets", "thu cua do snippets", "thu cuc du snippets", "thu muc do snippets", "thu cuoc doi 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 cuc do 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 cuc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu cuc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu cuc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.