Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nho dac cho snippets" » "ngo dac cho snippets", "ho dac cho snippets", "nho tac cho snippets", "nho day cho snippets", "nho 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: (((("nho 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: (((("nho dac cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nho dac cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nho dac cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.