Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao minh can snippets" » "cao minh can snippets", "dao minh can snippets", "ha minh can snippets", "hao minh chanh snippets", "hao minh danh snippets", "hao 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: (((("hao 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: (((("hao minh can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao minh can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao minh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.