Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan va le snippets" » "nhan tai le snippets", "nhan dan le snippets", "nhan tao le snippets", "nhan va de snippets", "nhan vu le 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: (((("nhan va le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan va le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan va le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan va le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.