Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cau trien o snippets" » "cau tren o snippets", "cau triet o snippets", "cau trieu o snippets", "cau trien bao snippets", "cau trien cho snippets", "cau trien ton 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: (((("cau trien o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cau trien o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cau trien o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cau trien o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.