Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan thi chi snippets" » "dan thi chi snippets", "doanh tai chi snippets", "hoang thi chi snippets", "doan thai chi snippets", "doan thi choi snippets", "doan tai chi 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: (((("doan thi chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan thi chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan thi chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan thi chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.