Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son duong di snippets" » "song duong di snippets", "con duong di snippets", "soi duong di snippets", "son duong dai snippets", "son duong thi snippets", "son duong loi 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: (((("son duong di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son duong di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son duong di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son duong di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.