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