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