Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat bieu de snippets" » "nhan dieu de snippets", "nha dieu de snippets", "nha hieu de snippets", "nhat biet de snippets", "nhat bieu do snippets", "nhat lieu 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: (((("nhat bieu 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: (((("nhat bieu de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat bieu de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat bieu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.