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