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