Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sieu thi do snippets" » "trieu thi do snippets", "dieu tri do snippets", "su thi do snippets", "sieu thi dao snippets", "sieu thi mo snippets", "sieu thi 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: (((("sieu thi 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: (((("sieu thi do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sieu thi do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sieu thi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.