Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chat dac cho snippets" » "chat doc cho snippets", "chat va cho snippets", "chat ban cho snippets", "chat day cho snippets", "chat danh 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: (((("chat dac 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: (((("chat dac cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chat dac cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chat dac cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.