Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bach ban tre snippets" » "bach dan tre snippets", "bach van tre snippets", "bach benh tre snippets", "bach ben tre snippets", "bach ban tro 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 ban tre 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 ban tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bach ban tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bach ban tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.