Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gian lan don snippets" » "gian lang don snippets", "gian dan don snippets", "giang van don snippets", "gian la don snippets", "gian lan dan snippets", "gian van don 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: (((("gian lan don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian lan don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian lan don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian lan don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.