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