Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len hoa doi snippets" » "yen hoa doi snippets", "dien hoa doi snippets", "tien hoa doi snippets", "len hoa dai snippets", "len hoc doi snippets", "len xoa doi 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: (((("len hoa doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len hoa doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len hoa doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len hoa doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.