Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chat khi doc snippets" » "chat thai doc snippets", "chat khoa doc snippets", "chet khit doc snippets", "chat khi doi snippets", "chat khi hoc snippets", "chat chi duoc 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 khi doc 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 khi doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chat khi doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chat khi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.