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