Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung tien co snippets" » "duong tien co snippets", "dung tren co snippets", "dong tien co snippets", "dung tien bo snippets", "dung tien do 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: (((("dung tien co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tien co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tien co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tien co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.