Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap voi can snippets" » "phap boi can snippets", "pham voi can snippets", "phap moi can snippets", "phap voi cac snippets", "phap voi cong snippets", "phap voi hang 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: (((("phap voi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap voi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap voi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap voi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.