Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thoi khac de snippets" » "tho nhac de snippets", "hoc khac de snippets", "khoa khac de snippets", "thoi khac di snippets", "thoi khac do snippets", "thoi hac de 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: (((("thoi khac de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thoi khac de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thoi khac de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thoi khac de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.