Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc doi canh snippets" » "duc doi hanh snippets", "duc boi canh snippets", "duc do canh snippets", "duc dai canh snippets", "duc loi canh snippets", "luc doi canh 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: (((("duc doi canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc doi canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc doi canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc doi canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.