Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi voi con snippets" » "chi voi con snippets", "khi doi con snippets", "khi hoi con snippets", "khi voi cong snippets", "khi voi chon snippets", "khi 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: (((("khi 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: (((("khi voi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi voi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.