Perhaps you should try some spelling variations:
"dat voi cong snippets" » "dat voi code snippets", "dat noi cong snippets", "dat moi cong snippets", "dat tai cong snippets", "dat boi cong snippets", "da voi cong snippets", "dao voi 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 ("dat voi 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 ("dat voi cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dat voi cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dat voi cong snippets"))) or ("locating bug core snippets"))*.