Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using low snippets" » "python using code snippets"
"dan dung do snippets" » "dan dung code snippets", "van dung do snippets", "tin dung do snippets", "ap dung do snippets", "dan dung doi snippets", "dan dung co snippets", "dan dung de 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: (((("dan dung do snippets") or ("python using low snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan dung do snippets") OR ("python using low snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan dung do snippets ) or ( python using low snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan dung do snippets") or ("python using low snippets"))) or ("locating bug core snippets"))*.