Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat anh co snippets" » "sat anh co snippets", "dat anh co snippets", "mai anh co snippets", "mat anh so snippets", "mat danh cho snippets", "mat nganh co 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 anh 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: (((("mat anh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat anh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat anh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.