Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che duoc doi snippets" » "che thuoc doi snippets", "che do doi snippets", "te duoc doi snippets", "che cuoc doi snippets", "che duoc hoi snippets", "che luoc doi 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 duoc doi 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 duoc doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che duoc doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che duoc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.