Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che hoat ke snippets" » "che khoa ke snippets", "cao hoat ke snippets", "co hoat ke snippets", "che hoat keo snippets", "che hat ke snippets", "che hoat den 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: (((("che hoat ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("che hoat ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che hoat ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che hoat ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.