Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bach van cuc snippets" » "bach dan cuc snippets", "cach van cuc snippets", "bach dang cuc snippets", "bach van duc snippets", "bach van luc snippets", "bach van cu 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 van cuc 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 van cuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bach van cuc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bach van cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.