Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bai van canh snippets" » "bai van anh snippets", "bai van hanh snippets", "bai van manh snippets", "bui van canh snippets", "hai van canh snippets", "mai van 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: (((("bai van 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: (((("bai van canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bai van canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bai van canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.