Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat hoang o snippets" » "dat hang o snippets", "dang hoang o snippets", "dai khoang o snippets", "dat hoang _ snippets", "dat hoang b snippets", "dat hoang son 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: (((("dat hoang o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat hoang o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat hoang o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat hoang o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.