Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao thi loan snippets" » "dao thi lan snippets", "dao thi hoan snippets", "dao thi lien snippets", "do thi loan snippets", "dan thi loan snippets", "dang thi loan 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: (((("dao thi loan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao thi loan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao thi loan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao thi loan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.