Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan chinh so snippets" » "luan chinh so snippets", "van chinh so snippets", "hanh chinh so snippets", "lan chinh su snippets", "lan chinh cho snippets", "lan dinh so 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: (((("lan chinh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan chinh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan chinh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan chinh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.