Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc luong so snippets" » "hoc thuong so snippets", "hoc phuong so snippets", "hoc truong so snippets", "hoc luong iso snippets", "hoc tuong so snippets", "hoc luong su 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: (((("hoc luong 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: (((("hoc luong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc luong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc luong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.