Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che quoc bo snippets" » "che duoc bo snippets", "he quoc bo snippets", "che thuoc bo snippets", "che quoc bao snippets", "che nuoc bo snippets", "che quoc co 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: (((("che quoc bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("che quoc bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che quoc bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che quoc bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.