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