Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"men dan canh snippets" » "men van canh snippets", "men dan cach snippets", "men dan hanh snippets", "men da canh snippets", "men dam canh snippets", "men gan 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: (((("men dan 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: (((("men dan canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( men dan canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("men dan canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.