Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hay pham voi snippets" » "hai pham voi snippets", "ha pham voi snippets", "hao pham voi snippets", "hay pham vi snippets", "hay cham voi snippets", "hay pham doi 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: (((("hay pham voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hay pham voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hay pham voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hay pham voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.