Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mon dan cho snippets" » "moi dan cho snippets", "mon dam cho snippets", "mon dat cho snippets", "mon danh cho snippets", "mon san cho snippets", "mon dac cho 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: (((("mon dan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mon dan cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mon dan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mon dan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.