Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap dan bo snippets" » "hat dan bo snippets", "hai dan bo snippets", "ham dan bo snippets", "hap dan bao snippets", "hap dan bon snippets", "hap can bo 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 dan bo 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 dan bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap dan bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap dan bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.