Perhaps you should try some spelling variations:
"cac cau dong snippets" » "cac cau code snippets", "cac cau duong snippets", "cac cau cong snippets", "cac cao dong snippets", "cac mau dong snippets", "bac cau dong snippets", "ca cau dong snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("cac cau dong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cac cau dong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( cac cau dong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cac cau dong snippets"))) or ("locating bug core snippets"))*.