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