Perhaps you should try some spelling variations:
"don noi cong snippets" » "don noi code snippets", "don nguoi cong snippets", "don tai cong snippets", "don thi cong snippets", "doi noi cong snippets", "duong noi cong snippets", "dong hoi cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("don noi cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("don noi cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( don noi cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("don noi cong snippets"))) or ("locating bug core snippets"))*.