Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat chan cho snippets" » "mat can cho snippets", "mau chan cho snippets", "mat chinh cho snippets", "mat chat cho snippets", "mat han cho snippets", "mat chuan chon 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: (((("mat chan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat chan cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat chan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat chan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.