Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan co cham snippets" » "toan cao cham snippets", "toan ho cham snippets", "toan hoc cham snippets", "toan ca cham snippets", "toan co champa snippets", "toan cao chat 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: (((("toan co cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan co cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan co cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan co cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.