Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong thap co snippets" » "dong tham co snippets", "dong thanh co snippets", "dong thuan co snippets", "dong tap co snippets", "dong thay co snippets", "dong phap cho 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: (((("dong thap 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: (((("dong thap co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong thap co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong thap co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.