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