Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang nam so snippets" » "hoang nam so snippets", "dang nam so snippets", "hanh nam so snippets", "hang nam sao snippets", "hang nam bo 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: (((("hang nam so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang nam so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang nam so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang nam so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.