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