Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lac son toan snippets" » "lac mon toan snippets", "lac so toan snippets", "lac son thanh snippets", "lam son toan snippets", "bac son toan snippets", "luc son toan 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: (((("lac son toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lac son toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lac son toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lac son toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.