Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son duong ho snippets" » "song duong ho snippets", "con duong ho snippets", "soi duong ho snippets", "son duong hoi snippets", "son duong hoc snippets", "son duong hoa 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 ho 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 ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son duong ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son duong ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.