Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao van choi snippets" » "nao van chi snippets", "nao van cho snippets", "nao san choi snippets", "ngo van choi snippets", "dao van choi snippets", "cao van choi 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: (((("nao van choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao van choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao van choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao van choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.