Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet mau cho snippets" » "viet cau cho snippets", "viet man cho snippets", "viet may cho snippets", "viet mau chot snippets", "viet mai cho snippets", "viet mau co 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: (((("viet mau cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet mau cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet mau cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet mau cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.