Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap so cua snippets" » "phap mo cua snippets", "phap hoc cua snippets", "phap co cua snippets", "phap do cua snippets", "phap bo cua 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 cua 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 cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap so cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap so cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.