Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len tinh le snippets" » "yen tinh le snippets", "den tinh le snippets", "bien tinh le snippets", "len thinh le snippets", "len trinh le snippets", "len dinh le 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 tinh le 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 tinh le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len tinh le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len tinh le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.