Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc hoa so snippets" » "hoc hoa so snippets", "nghe hoa so snippets", "ngoc hai so snippets", "ngoc hoa son snippets", "ngoc hoa co snippets", "ngoc hoa vo 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: (((("ngoc hoa 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: (((("ngoc hoa so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc hoa so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc hoa so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.