Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap hang cho snippets" » "phap khang cho snippets", "phap nang cho snippets", "phap tang cho snippets", "hap sang cho snippets", "hap han cho snippets", "hap tang cho 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: (((("hap hang 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: (((("hap hang cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap hang cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap hang cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.