Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc dung tre snippets" » "hoc ung tre snippets", "hoc dan tre snippets", "hoc cong tre snippets", "hoc dung tren snippets", "hoc dung tri snippets", "hoc dung tru 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: (((("python using java snippets") or ("hoc dung tre snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("hoc dung tre snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hoc dung tre snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hoc dung tre snippets"))) or ("locating bug code snippets"))*.