Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi cong vo snippets" » "noi cong vo snippets", "voi cong vo snippets", "tai cong vo snippets", "moi cuong vo snippets", "moi cong va snippets", "moi cong so 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: (((("moi cong vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi cong vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi cong vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi cong vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.