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