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