Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phai dan cac snippets" » "hai dan cac snippets", "phan dang cac snippets", "thai doan cac snippets", "phai dan cach snippets", "phai dang cac snippets", "phai dan ca 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: (((("phai dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phai dan cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phai dan cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phai dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.