Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hon dac cho snippets" » "ho dac cho snippets", "hon dat cho snippets", "hong duc cho snippets", "hon day cho snippets", "hon danh cho 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: (((("hon dac cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hon dac cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hon dac cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hon dac cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.