Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hanh lo snippets" » "thuc hanh lo snippets", "thu thanh lo snippets", "thuy hanh lo snippets", "thu hanh mo snippets", "thu thanh loi snippets", "thu nhanh lao 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 hanh lo 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 hanh lo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hanh lo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hanh lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.