Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"de sieu doan snippets" » "de sieu dan snippets", "de kieu doan snippets", "de sieu don snippets", "de hieu doan snippets", "xe sieu doan snippets", "ve sieu 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: (((("de sieu 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: (((("de sieu doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( de sieu doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("de sieu doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.