Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung phu so snippets" » "nhung pham so snippets", "nhung phat so snippets", "nhung khuc so snippets", "nhung phu do snippets", "nhung phu o 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: (((("nhung phu 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: (((("nhung phu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung phu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung phu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.