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