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