Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len trinh he snippets" » "len tinh he snippets", "tien trinh he snippets", "lap trinh he snippets", "len trinh han snippets", "len trinh hoa snippets", "len trinh ky 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 trinh he 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 trinh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len trinh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len trinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.