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