Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chon benh ve snippets" » "chon binh ve snippets", "con benh ve snippets", "phong benh ve snippets", "chon benh va snippets", "chon benh vien 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: (((("chon benh 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: (((("chon benh ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chon benh ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chon benh ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.