Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan thi so snippets" » "dang thi so snippets", "tran thi so snippets", "dinh thi so snippets", "dan thi sao snippets", "dan thi son snippets", "dan thi mo 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: (((("dan thi 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: (((("dan thi so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thi so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thi so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.