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