Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hoan ve snippets" » "thi hoan ve snippets", "thu hoach ve snippets", "thu ha ve snippets", "thu toan ve snippets", "thu hoai ve snippets", "thu hoan va 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: (((("thu hoan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hoan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hoan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hoan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.