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