Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bach hue cac snippets" » "bach he cac snippets", "bach hieu cac snippets", "bach hien cac snippets", "sach hue cac snippets", "cach hue cac snippets", "bac hue cac 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: (((("bach hue cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bach hue cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bach hue cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bach hue cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.