Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len vong doi snippets" » "le vong doi snippets", "len cong doi snippets", "lang vong doi snippets", "len trong doi snippets", "len huong doi snippets", "len dung doi 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: (((("len vong doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len vong doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len vong doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len vong doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.