Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong duoc vo snippets" » "cong cuoc vo snippets", "dong duoc vo snippets", "cong duc vo snippets", "cong duoc va snippets", "cong duoc co snippets", "cong duoc do 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 duoc 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: (((("cong duoc vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong duoc vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong duoc vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.