Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dien thi cua snippets" » "dien thoai cua snippets", "trien thi cua snippets", "dien tu cua snippets", "dien thai cua snippets", "dien thi cuc snippets", "dien tri cua 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: (((("dien thi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dien thi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dien thi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dien thi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.