Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban nhan mo snippets" » "ban than mo snippets", "van nhan mo snippets", "ban thanh mo snippets", "ban nhan my snippets", "ban phan mo snippets", "ban nhap mon 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: (((("ban nhan mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban nhan mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban nhan mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban nhan mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.