Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kien noi cua snippets" » "dien noi cua snippets", "kien doi cua snippets", "kien toi cua snippets", "kien hoi cua snippets", "kien moi cua 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: (((("kien noi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kien noi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kien noi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kien noi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.