Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh duy de snippets" » "trinh duc de snippets", "trinh dung de snippets", "trinh thuy de snippets", "trinh duy den snippets", "trinh duy ke 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: (((("trinh duy 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: (((("trinh duy de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh duy de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh duy de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.