Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cau theo do snippets" » "cau thi do snippets", "cau tao do snippets", "cau theo doi snippets", "cau theo don snippets", "cau theo bo 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 theo do 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 theo do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cau theo do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cau theo do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.