Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pha minh can snippets" » "pham minh can snippets", "phan minh can snippets", "phat minh can snippets", "pha minh chanh snippets", "pha minh danh snippets", "pha minh tuan 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: (((("pha minh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pha minh can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pha minh can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha minh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.