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