Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang du cho snippets" » "hang dau cho snippets", "hoang du cho snippets", "nang du cho snippets", "hang cu cho snippets", "hang de cho snippets", "hang du chi 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: (((("hang du 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: (((("hang du cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang du cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang du cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.